Extinct Peerage Titles - L thru R
Surnames and Titles are often different.
Press CTRL + F to search this page for a particular surname.
Titles without an extinction date expired prior to 1900.
NAVIGATION
TITLE
DEGREE
PEERAGE
MO
DAY
YEAR
SURNAME(S)
EXTINCTION DATE
L’ISLE
BARON
E
1347
L’ISLE
L’ISLE
BARON
E
1433
TALBOT
Peerage Index
L’ISLE
VISCOUNT
E
1452
TALBOT
A thru C
L’ISLE
BARON
E
1475
GREY
D thru K
L’ISLE
VISCOUNT
E
1483
GREY
L thru R
L’ISLE
VISCOUNT
E
1513
BRANDON
S thru Z
L’ISLE
VISCOUNT
E
1533
PLANTAGENET
L’ISLE
BARON
E
1541
DUDLEY
L’ISLE
VISCOUNT
E
1542
DUDLEY
L’ISLE
BARON
E
1561
DUDLEY
L’ISLE
VISCOUNT
E
1605
SYDNEY
L’ISLE OF ROUGEMONT
BARON
E
1311
L’ISLE
L’ORTI
BARON
E
1299
L’ORTI
LA MARE
BARON
E
1299
MARE
LAKE
BARON
UK
1804
LAKE
LAKE
VISCOUNT
UK
1807
LAKE
LAMBOURNE
BARON
UK
6
19
1917
LOCKWOOD
1928
LAMBURY OF NORTHFIELD
BARON
UK
3
26
1962
LORD
1967
LAMINGTON OF LAMINGTON
BARON
UK
5
3
1880
COCHRANE-BAILLIE
1951
LANCASTER
EARL
E
1267
PLANTAGENET
LANCASTER
BARON
E
1299
LANCASTER
LANCASTER
DUKE
E
3
6
1351
PLANTAGENET
1399
LANE
BARON
I
1676
LANE
LANERTON
BARON
UK
1873
HOWARD
1880
LANESBOROUGH
VISCOUNT
I
1676
LANE
LANG OF LAMBETH
BARON
UK
4
2
1942
LANG
1945
LANGDALE
BARON
E
1658
LANGDALE
LANGDALE
BARON
UK
1836
BICKERSTETH
1851
LANGFORD
VISCOUNT
I
1700
ROWLEY
LANSDOWNE
BARON
GB
1712
GRANVILLE
LASCELES
BARON
E
1295
LASCELES
LATHOM
EARL
UK
5
3
1880
BOOTLE-WILBRAHAM
1930
LATIMER
BARON
E
1299
LATIMER
LATIMER
BARON
E
1432
NEVILL
LATIMER OF BRAYBROOKE
BARON
E
1299
LATIMER
LATIMER OF DANBY
VISCOUNT
E
8
5
1673
OSBORNE
1964
LAUDERDALE
DUKE
S
5
2
1672
MAITLAND
1682
LAUDERDALE
BARON
UK
1806
MAITLAND
1863
LAUNCESTON
VISCOUNT
UK
7
18
1917
MOUNTBATTEN
1960
LAVINGTON
BARON
I
1795
PAYNE
LAWRENCE OF KINGSGATE
BARON
UK
1923
LAWRENCE
1927
LAWSON
BARON
UK
3
17
1950
LAWSON
1965
LE BOTILER
BARON
I
LE BOTILER
Peerage Index
LECALE
VISCOUNT
I
1624
CROMWELL
A thru C
LECALE
BARON
I
1800
FITZGERALD
D thru K
LECHMERE
BARON
GB
1721
LECHMERE
L thru R
LEE OF FAREHAM
BARON
UK
7
9
1918
LEE
1947
S thru Z
LEE OF FAREHAM
VISCOUNT
UK
11
20
1922
LEE
1947
LEEDS
DUKE
E
5
4
1694
OSBORNE
1964
LEICESTER
EARL
E
1103
BELLAMONT OR BEAUMONT
LEICESTER
EARL
E
1206
MONTFORT
LEICESTER
EARL
E
1264
PLANTAGENET
LEICESTER
EARL
E
1563
DUDLEY
LEICESTER
EARL
E
1618
SYDNEY
LEICESTER
EARL
GB
1744
COKE
LEICESTER
EARL
GB
1784
TOWNSHEND
1855
LEIGH
BARON
E
1643
LEIGH
LEIGHTON OF STRETTON
BARON
UK
1896
LEIGHTON
1896
LEINSTER
EARL
I
1645
CHOLMONDELEY
LEINSTER
DUKE
I
1691
SCHOMBERG
LEITH OF FYVIE
BARON
UK
12
18
1905
FORBES-LEITH
1925
LEITRIM
BARON
I
1583
BURKE
LEITRIM
VISCOUNT
I
12
3
1793
CLEMENTS
1952
LEITRIM
EARL
I
9
30
1795
CLEMENTS
1952
LEITRIM OF MANOR HAMILTON
BARON
I
10
11
1783
CLEMENTS
1952
LENNOX
EARL
S
1488
STEWART
LENNOX
EARL
S
1572
STUART
LENNOX
EARL
S
1578
STUART
LENNOX
EARL
S
1580
STUART
LENNOX
DUKE
S
8
5
1581
STEWART
1672
LEXINTON
BARON
E
1645
SUTTON
LEY
BARON
E
1625
LEY
LEYBURN
BARON
E
1299
LEYBURN
LEYBURN
BARON
E
1337
LEYBURN
LICHFIELD
EARL
E
1645
STUART
LICHFIELD
EARL
E
1674
LEE
LIGONIER
VISCOUNT
I
1757
LIGONIER
LIGONIER
BARON
GB
1763
LIGONIER
LIGONIER
EARL
GB
1766
LIGONIER
LIMERICK
EARL
I
1685
DUNGAN, DONGAN
1715
LIMERICK
VISCOUNT
I
1719
HAMILTON
LINCOLN
EARL
E
1142
ROMARE
LINCOLN
EARL
E
1216
GANT
LINCOLN
EARL
E
1232
LACY
LINCOLN
EARL
E
1349
PLANTAGENET
Peerage Index
LINCOLN
EARL
E
1467
POLE
A thru C
LINCOLN
EARL
E
1525
BRANDON
D thru K
LINCOLNSHIRE
MARQUESS
UK
2
26
1912
WYNN-CARRINGTON, CARINGTON
1928
L thru R
LINDORES
BARON
S
1600
LESLIE
S thru Z
LINDSAY
LORD
S
1455
LINDSAY
LINDSEY
MARQUESS
E
1706
BERTIE
LINGEN OF LINGEN
BARON
UK
1885
LINGEN
1905
LINLITHGOW
EARL
S
1600
LIVINGSTON
LINTON AND CABARSTOWN
BARON
S
1683
STUART
DORMANT 1861
LISBURNE
VISCOUNT
I
1685
LOFTUS
LISGAR
BARON
UK
1870
YOUNG
1887
LISMORE OF SHANBALLY
BARON
I
1785
O’CALLAGHAN
1898
LISMORE OF SHANBALLY
VISCOUNT
I
1806
O’CALLAGHAN
1898
LISMORE OF SHANBALLY CASTLE
BARON
UK
1838
O’CALLAGHAN
1898
LISTER OF LYME
BARON
UK
1897
LISTER
1912
LIVERPOOL
EARL
GB
1746
JENKINSON
LIVERPOOL
EARL
GB
1796
1851
LIVINGSTON
LORD
S
1449
LIVINGSTON
LIVINGSTON
LORD
S
1633
LIVINGSTON
LIVINGSTON
LORD
S
1660
LIVINGSTON
LLANDAFF
BARON
I
1783
MATHEW
LLANDAFF
VISCOUNT
I
1793
MATHEW
LLANDAFF
EARL
I
1797
MATHEW
LLANDAFF
VISCOUNT
UK
1895
MATTHEWS
1913
LLANDOVER
BARON
UK
1859
HALL
1867
LLANGATTOCK
BARON
UK
1892
ROLLS
1916
LLEWELLIN OF UPTON
BARON
UK
9
12
1945
LLEWELLIN
1957
LOCHEE
BARON
UK
1908
ROBERTSON
1911
LOCHINVAR
LORD
S
1633
GORDON
LOFTUS
VISCOUNT
I
1622
LOFTUS
LOFTUS
BARON
I
1751
LOFTUS
LOFTUS
VISCOUNT
I
1756
LOFTUS
LONDESBOROUGH
EARL
UK
7
1
1887
DENISON
1937
LONDONDERRY
EARL
I
1622
RIDGEWAY
LONDONDERRY
BARON
I
1719
PITT
LONDONDERRY
EARL
I
1726
PITT
LONGFORD
VISCOUNT
I
1675
AUNGIER
LONGFORD
EARL
I
1677
AUNGIER
LONGFORD
VISCOUNT
I
1713
FLEMING
LONGUEVILLE
VISCOUNT
E
1690
YELVERTON
LONGUEVILLE
BARON
I
1795
LONGFIELD
Peerage Index
LONGUEVILLE
VISCOUNT
I
1800
LONGFIELD
A thru C
LONGVILLIERS
BARON
E
1342
LONGVILLIERS
D thru K
LONSDALE
VISCOUNT
E
1696
LOWTHER
L thru R
LONSDALE
EARL
GB
1784
LOWTHER
S thru Z
LOREBURN
BARON
UK
1906
REID
1923
LOREBURN
EARL
UK
1911
REID
1923
LORN
LORD
S
1439
STEWART
LOUGHBOROUGH
BARON
GB
1780
WEDDERBURN
LOUGHUYRE
BARON
I
1718
FANE
LOUTH
EARL
I
1319
BERMINGHAM
LOUTH
EARL
I
1759
BERMINGHAM
LOVEL
VISCOUNT
E
1483
LOVEL
LOVEL OF KARY
BARON
E
1348
LOVEL
LOVEL OF MINSTER LOVEL
BARON
GB
1728
LOVEL
LOVEL OF TICHMERSH
BARON
E
1299
LOVEL
LOVELACE
BARON
E
1627
LOVELACE
LOWTHER
BARON
E
1696
LOWTHER
LOWTHER
EARL
GB
1784
LOWTHER
LOWTHER
VISCOUNT
GB
1784
LOWTHER
LUCAN
EARL
I
1689
SARSFIELD
LUCAS
BARON
E
1644
LUCAS
LUCY OF EGREMONT
BARON
E
1320
LUCY
LUDLOW
EARL
GB
1760
LUDLOW
LUDLOW
BARON
UK
1831
LUDLOW
LUDLOW OF HEYWOOD
BARON
UK
1897
LOPES, FRANCO
1922
LUGARD
BARON
UK
1928
LUGARD
1945
LUMLEY
BARON
E
1384
LUMLEY
LUMLEY
BARON
E
1547
LUMLEY
LUNDIE
LORD
S
1642
CAMPBELL
LUTEREL
BARON
E
1295
LUTEREL
LUXBOROUGH
BARON
I
1746
KNIGHT
LYLE
LORD
S
1446
LYLE
LYLE OF WESTBOURNE
BARON
UK
9
13
1945
LYLE
1976
LYNDHURST
BARON
UK
1827
COPLEY
1863
LYNDOCH
BARON
UK
1814
GRAHAM
LYONS
BARON
UK
1856
LYONS
1887
LYONS
VISCOUNT
UK
1881
LYONS
1887
LYTTLETON
BARON
E
1640
LYTTLETON
LYTTLETON
BARON
GB
1756
LYTTLETON
MABANE
BARON
UK
6
15
1962
MABANE
1969
MACARTNEY
BARON
I
1767
MACARTNEY
Peerage Index
MACARTNEY
VISCOUNT
I
1793
MACARTNEY
A thru C
MACARTNEY
EARL
I
1794
MACARTNEY
D thru K
MACARTNEY
BARON
GB
1796
MACARTNEY
L thru R
MACAULAY
BARON
UK
1857
MACAULAY
1859
S thru Z
MACCLESFIELD
EARL
E
1679
GERARD
MACDONALD OF EARNSCLIFFE
BARON
UK
1891
MACDONALD
1920
MACDONELL AND ARRAS
LORD
S
1660
MACDONELL
MACDONNELL
BARON
UK
7
2
1908
MACDONNELL
1925
MACDUFF
VISCOUNT
I
1759
DUFF
1912
MACDUFF
MARQUESS
UK
1889
DUFF
1912
MACGILL
LORD
S
1651
MACGILL
MACKENZIE
BARON
S
1609
MACKENZIE
MACLEOD
LORD
S
1685
MACKENZIE
MADELEY
EARL
UK
7
3
1911
CREWE-MILNES, OFFLEY
1945
MADERTY
LORD
S
1609
DRUMMOND
MAENAN OF ELLESMERE
BARON
UK
6
23
1948
TAYLOR
1951
MAGENNIS
VISCOUNT
I
1623
MAGENNIS
MAGHERAMORNE
BARON
UK
7
5
1887
MCGAREL-HOGG
1957
MAGUIRE
BARON
I
1627
MAGUIRE
MALCOLM OF POLTALLOCH
BARON
UK
1896
MALCOLM
1902
MALLOWNE
BARON
I
1622
MALLOWNE O’MULLAN
MALMESBURY
MARQUESS
GB
1715
WHARTON
MALTON
BARON
GB
1728
WATSON (WENTWORTH)
MALTON
EARL
GB
1734
WATSON (WENTWORTH)
MALTON
BARON
I
1750
WENTWORTH
MALTON
EARL
I
1750
WENTWORTH
MAMHEAD
BARON
UK
1931
NEWMAN
1945
MANNY
BARON
E
1347
MANNY
MANSEL
BARON
GB
1712
MANSEL
MANSFIELD
VISCOUNT
E
1620
CAVENDISH
MANVERS
EARL
UK
4
9
1806
PIERREPONT, MEDOWS
1955
MARCH
EARL
E
1328
MORTIMER
MARCH
EARL
E
1479
PLANTAGENET
MARCH
EARL
S
1582
STEWART
MARCH
EARL
E
1619
STUART
MARCH
MARQUESS
S
1672
MAITLAND
MARCH
EARL
S
DUNBAR
MARCHMONT
EARL
S
1697
HUME
MARISCHAL
EARL
S
1458
KEITH
MARJORIBANKS
BARON
UK
1873
MARJORIBANKS, ROBERTSON
1873
Peerage Index
MARKS
BARON
UK
1929
MARKS
1938
A thru C
MARLBOROUGH
EARL
E
1626
LEY
D thru K
MARMION OF WETRINGTON
BARON
E
1313
MARMION
L thru R
MARMYON
BARON
E
1264
MARMYON
S thru Z
MARNEY
BARON
E
1523
MARNEY
MARR
EARL
S
1426
STEWART
MARR
EARL
S
1457
STEWART
MARR AND GARVIACH
EARL
S
1486
STEWART
MARSHAL
BARON
E
1309
MARSHAL
MARSHALL OF CHIPSTEAD
BARON
UK
1
14
1921
MARSHALL
1936
MARTIN
BARON
E
1295
MARTIN
MARYBOROUGH
BARON
I
1821
WELLESLEY
1863
MASHAM
BARON
GB
1712
MASHAM
MASHAM OF SWINTON
BARON
UK
7
15
1891
CUNLIFFE-LISTER
1924
MASSAREENE
EARL
I
1756
SKEFFINGTON
MATHERS
BARON
UK
1
30
1952
MATHERS
1965
MAUDUIT
BARON
E
1342
MAUDUIT
MAUGHAM
BARON
UK
1935
MAUGHAM
1981
MAUGHAM
VISCOUNT
UK
9
22
1939
MAUGHAM
1981
MAULE OF WHITECHURCH
VISCOUNT
I
1743
MAULE
MAULEY
BARON
E
1295
MAULEY
MAYNARD
BARON
E
1611
MAYNARD
MAYNARD
BARON
I
1620
MAYNARD
1865
MAYNARD
BARON
E
1628
MAYNARD
MAYNARD
VISCOUNT
GB
1766
MAYNARD
1865
MCCORQUODALE OF NEWTON
BARON
UK
9
2
1955
MCCORQUODALE
1971
MCENTEE
BARON
UK
6
26
1951
MCENTEE
1953
MEINILL
BARON
E
1295
MEINILL
MEINILL
BARON
E
1313
MEINILL
MEINILL
BARON
E
1336
MEINILL
MELBOURNE
BARON
I
6
8
1770
LAMB
1853
MELBOURNE
VISCOUNT
I
1
11
1781
LAMB
1853
MELBOURNE
BARON
UK
8
11
1815
1853
MELCOMBE
BARON
GB
1761
DODINGTON
MELFORT
VISCOUNT
S
4
14
1685
DRUMMOND
DORMANT 1902
MELFORT
EARL
S
8
12
1686
DRUMMOND
DORMANT 1902
Peerage Index
MELFORT
DUKE
S
1690
DRUMMOND
EXTINCT - ATTAINTED 1694
A thru C
MELGUM
VISCOUNT
S
1627
GORDON
D thru K
MELROSE
LORD
S
1609
RAMSAY
L thru R
MELROSE (OR MELROS) OF TYNINGHAME
BARON
UK
1827
HAMILTON
1858
S thru Z
MENTEITH
EARL
S
1258
MENTEITH
MEREDYTH
BARON
UK
1866
SOMERVILLE
1929
MERRIMAN OF KNUTSFORD
BARON
UK
1
27
1941
MERRIMAN
1962
METCALFE
BARON
UK
1845
METCALFE
METHVEN
LORD
S
1528
STEWART
MICHELHAM
BARON
UK
12
28
1905
STERN
1984
MICHLETHWAIT
VISCOUNT
I
1727
MICHLETHWAIT
MICKLETHWAIT
BARON
I
1724
MICKLETHWAIT
MIDDLESEX
EARL
E
1622
CRANFIELD
MIDDLETON
EARL
S
1660
MIDDLETON
MIDLETON
EARL
UK
2
2
1920
BRODRICK
1979
MILBROKE
BARON
E
1442
CORNWALL
MILDMAY OF FLETE
BARON
UK
11
20
1922
MILDMAY
1950
MILFORD
BARON
I
1776
PHILIPPS
MILFORD
BARON
UK
1847
PHILIPPS
1857
MILLTOWN
EARL
I
5
20
1763
LEESON
DORMANT 1891
MILNER
VISCOUNT
UK
7
15
1902
MILNER
1925
MILNER OF ST. JAMES’S LONDON
BARON
UK
5
27
1901
MILNER
1925
MILSINGTON
VISCOUNT
S
1703
COLYEAR
MILTON
VISCOUNT
I
7
21
1716
WENTWORTH-FITZWILLIAM
1979
MILTON
BARON
GB
4
19
1742
WENTWORTH-FITZWILLIAM
1979
MILTON
BARON
I
1753
DAMER
MILTON
BARON
GB
1762
DAMER
MILTON
VISCOUNT
GB
1792
DAMER
MOELS
BARON
E
1299
MOELS
MOHUN
BARON
E
1299
MOHUN
MOHUN OF OKEHAMPTON
BARON
E
1628
MOHUN
MOIRA
EARL
GB
1761
RAWDON
MOLINES
BARON
E
1347
MOLINES
MOLYNEUX
VISCOUNT
I
12
22
1628
MOLYNEUX
1972
MONCKTON
BARON
UK
7
4
1887
MONCKTON-ARUNDELL
1971
MONMOUTH
EARL
E
1626
CAREY
MONMOUTH
DUKE
E
2
14
1663
SCOTT (FITZ ROY)
1685
Peerage Index
MONMOUTH
EARL
E
1689
MORDAUNT
A thru C
MONSON
VISCOUNT
I
1628
MONSON
D thru K
MONTACUTE
BARON
E
1300
MONTACUTE
L thru R
MONTACUTE
BARON
E
1342
MONTACUTE
S thru Z
MONTACUTE
BARON
E
1357
MONTACUTE
MONTAGU
BARON
E
1294
NEVILL
MONTAGU
MARQUESS
E
1470
NEVILL
MONTAGU
VISCOUNT
E
1554
BROWNE
MONTAGU
EARL
E
4
9
1689
MONTAGU
MONTAGU
DUKE
E
4
12
1705
MONTAGU
1749
MONTAGU
DUKE
GB
11
5
1766
MONTAGU
1790
MONTAGU OF BOUGHTON
BARON
E
6
29
1621
MONTAGU
1749
MONTAGU OF BOUGHTON
BARON
GB
5
8
1762
MONTAGU
1770
MONTAGU OF BOUGHTON
BARON
GB
8
21
1781
MONTAGU
1845
MONTAGUE
BARON
E
1553
POLE
MONTALT
BARON
E
1295
MONTALT
MONTEAGLE
BARON
E
11
23
1514
PARKER, STANLEY
MONTEITH AND AIRTH
EARL
S
1427
GRAHAM
MONTFORD
BARON
GB
1741
1851
MONTFORT
BARON
E
1295
MONTFORT
MONTFORT
BARON
GB
1741
BROMLEY
MONTGOMERY
BARON
E
1342
MONTGOMERY
MONTGOMERY
VISCOUNT
I
1622
MONTGOMERY
MONTHERMER
BARON
E
3
4
1309
MONTHERMER, NEVILL
MONTJOY OF THE ISLE OF WIGHT
BARON
GB
1711
WINDSOR
MONTROSE
DUKE
S
1488
LINDSAY
ABEYANT 1495 (LACK OF INTEREST AMONG HEIRS)
MONYPENNY
LORD
S
1464
MONYPENNY
MOORE
BARON
I
1715
MOORE
MOORE OF MOORE PLACE
BARON
UK
1
17
1801
MOORE
1892
MORAY
EARL
S
1130
ANGUS
MORAY
EARL
S
1312
RANDOLPH
MORAY
EARL
S
1372
DUNBAR
MORDAUNT
VISCOUNT
E
1659
MORDAUNT
MORDINGTON
LORD
S
1641
DOUGLAS
MORLEY
BARON
E
12
29
1299
MORLEY, PARKER, LOVEL
ABEYANT 1686
MORLEY OF BLACKBURN
VISCOUNT
UK
1908
MORLEY
1923
MORTIMER
BARON
E
1294
MORTIMER
MORTIMER OF CHIRKE
BARON
E
1307
MORTIMER
MORTIMER OF RICHARD’S CASTLE
BARON
E
1297
MORTIMER
MORTMORE
EARL
S
1703
COLYEAR
Peerage Index
MORTON
EARL
S
1458
DOUGLAS, MAXWELL
A thru C
MOUNT ALEXANDER
EARL
I
1661
MONTGOMERY
D thru K
MOUNT CASHEL
VISCOUNT
I
1705
DAVYS
L thru R
Titles without an extinction date expired prior to 1900.
| NAVIGATION | TITLE | DEGREE | PEERAGE | MO | DAY | YEAR | SURNAME(S) | EXTINCTION DATE |
|---|---|---|---|---|---|---|---|---|
| L’ISLE | BARON | E | 1347 | L’ISLE | ||||
| L’ISLE | BARON | E | 1433 | TALBOT | ||||
| Peerage Index | L’ISLE | VISCOUNT | E | 1452 | TALBOT | |||
| A thru C | L’ISLE | BARON | E | 1475 | GREY | |||
| D thru K | L’ISLE | VISCOUNT | E | 1483 | GREY | |||
| L thru R | L’ISLE | VISCOUNT | E | 1513 | BRANDON | |||
| S thru Z | L’ISLE | VISCOUNT | E | 1533 | PLANTAGENET | |||
| L’ISLE | BARON | E | 1541 | DUDLEY | ||||
| L’ISLE | VISCOUNT | E | 1542 | DUDLEY | ||||
| L’ISLE | BARON | E | 1561 | DUDLEY | ||||
| L’ISLE | VISCOUNT | E | 1605 | SYDNEY | ||||
| L’ISLE OF ROUGEMONT | BARON | E | 1311 | L’ISLE | ||||
| L’ORTI | BARON | E | 1299 | L’ORTI | ||||
| LA MARE | BARON | E | 1299 | MARE | ||||
| LAKE | BARON | UK | 1804 | LAKE | ||||
| LAKE | VISCOUNT | UK | 1807 | LAKE | ||||
| LAMBOURNE | BARON | UK | 6 | 19 | 1917 | LOCKWOOD | 1928 | |
| LAMBURY OF NORTHFIELD | BARON | UK | 3 | 26 | 1962 | LORD | 1967 | |
| LAMINGTON OF LAMINGTON | BARON | UK | 5 | 3 | 1880 | COCHRANE-BAILLIE | 1951 | |
| LANCASTER | EARL | E | 1267 | PLANTAGENET | ||||
| LANCASTER | BARON | E | 1299 | LANCASTER | ||||
| LANCASTER | DUKE | E | 3 | 6 | 1351 | PLANTAGENET | 1399 | |
| LANE | BARON | I | 1676 | LANE | ||||
| LANERTON | BARON | UK | 1873 | HOWARD | 1880 | |||
| LANESBOROUGH | VISCOUNT | I | 1676 | LANE | ||||
| LANG OF LAMBETH | BARON | UK | 4 | 2 | 1942 | LANG | 1945 | |
| LANGDALE | BARON | E | 1658 | LANGDALE | ||||
| LANGDALE | BARON | UK | 1836 | BICKERSTETH | 1851 | |||
| LANGFORD | VISCOUNT | I | 1700 | ROWLEY | ||||
| LANSDOWNE | BARON | GB | 1712 | GRANVILLE | ||||
| LASCELES | BARON | E | 1295 | LASCELES | ||||
| LATHOM | EARL | UK | 5 | 3 | 1880 | BOOTLE-WILBRAHAM | 1930 | |
| LATIMER | BARON | E | 1299 | LATIMER | ||||
| LATIMER | BARON | E | 1432 | NEVILL | ||||
| LATIMER OF BRAYBROOKE | BARON | E | 1299 | LATIMER | ||||
| LATIMER OF DANBY | VISCOUNT | E | 8 | 5 | 1673 | OSBORNE | 1964 | |
| LAUDERDALE | DUKE | S | 5 | 2 | 1672 | MAITLAND | 1682 | |
| LAUDERDALE | BARON | UK | 1806 | MAITLAND | 1863 | |||
| LAUNCESTON | VISCOUNT | UK | 7 | 18 | 1917 | MOUNTBATTEN | 1960 | |
| LAVINGTON | BARON | I | 1795 | PAYNE | ||||
| LAWRENCE OF KINGSGATE | BARON | UK | 1923 | LAWRENCE | 1927 | |||
| LAWSON | BARON | UK | 3 | 17 | 1950 | LAWSON | 1965 | |
| LE BOTILER | BARON | I | LE BOTILER | |||||
| Peerage Index | LECALE | VISCOUNT | I | 1624 | CROMWELL | |||
| A thru C | LECALE | BARON | I | 1800 | FITZGERALD | |||
| D thru K | LECHMERE | BARON | GB | 1721 | LECHMERE | |||
| L thru R | LEE OF FAREHAM | BARON | UK | 7 | 9 | 1918 | LEE | 1947 |
| S thru Z | LEE OF FAREHAM | VISCOUNT | UK | 11 | 20 | 1922 | LEE | 1947 |
| LEEDS | DUKE | E | 5 | 4 | 1694 | OSBORNE | 1964 | |
| LEICESTER | EARL | E | 1103 | BELLAMONT OR BEAUMONT | ||||
| LEICESTER | EARL | E | 1206 | MONTFORT | ||||
| LEICESTER | EARL | E | 1264 | PLANTAGENET | ||||
| LEICESTER | EARL | E | 1563 | DUDLEY | ||||
| LEICESTER | EARL | E | 1618 | SYDNEY | ||||
| LEICESTER | EARL | GB | 1744 | COKE | ||||
| LEICESTER | EARL | GB | 1784 | TOWNSHEND | 1855 | |||
| LEIGH | BARON | E | 1643 | LEIGH | ||||
| LEIGHTON OF STRETTON | BARON | UK | 1896 | LEIGHTON | 1896 | |||
| LEINSTER | EARL | I | 1645 | CHOLMONDELEY | ||||
| LEINSTER | DUKE | I | 1691 | SCHOMBERG | ||||
| LEITH OF FYVIE | BARON | UK | 12 | 18 | 1905 | FORBES-LEITH | 1925 | |
| LEITRIM | BARON | I | 1583 | BURKE | ||||
| LEITRIM | VISCOUNT | I | 12 | 3 | 1793 | CLEMENTS | 1952 | |
| LEITRIM | EARL | I | 9 | 30 | 1795 | CLEMENTS | 1952 | |
| LEITRIM OF MANOR HAMILTON | BARON | I | 10 | 11 | 1783 | CLEMENTS | 1952 | |
| LENNOX | EARL | S | 1488 | STEWART | ||||
| LENNOX | EARL | S | 1572 | STUART | ||||
| LENNOX | EARL | S | 1578 | STUART | ||||
| LENNOX | EARL | S | 1580 | STUART | ||||
| LENNOX | DUKE | S | 8 | 5 | 1581 | STEWART | 1672 | |
| LEXINTON | BARON | E | 1645 | SUTTON | ||||
| LEY | BARON | E | 1625 | LEY | ||||
| LEYBURN | BARON | E | 1299 | LEYBURN | ||||
| LEYBURN | BARON | E | 1337 | LEYBURN | ||||
| LICHFIELD | EARL | E | 1645 | STUART | ||||
| LICHFIELD | EARL | E | 1674 | LEE | ||||
| LIGONIER | VISCOUNT | I | 1757 | LIGONIER | ||||
| LIGONIER | BARON | GB | 1763 | LIGONIER | ||||
| LIGONIER | EARL | GB | 1766 | LIGONIER | ||||
| LIMERICK | EARL | I | 1685 | DUNGAN, DONGAN | 1715 | |||
| LIMERICK | VISCOUNT | I | 1719 | HAMILTON | ||||
| LINCOLN | EARL | E | 1142 | ROMARE | ||||
| LINCOLN | EARL | E | 1216 | GANT | ||||
| LINCOLN | EARL | E | 1232 | LACY | ||||
| LINCOLN | EARL | E | 1349 | PLANTAGENET | ||||
| Peerage Index | LINCOLN | EARL | E | 1467 | POLE | |||
| A thru C | LINCOLN | EARL | E | 1525 | BRANDON | |||
| D thru K | LINCOLNSHIRE | MARQUESS | UK | 2 | 26 | 1912 | WYNN-CARRINGTON, CARINGTON | 1928 |
| L thru R | LINDORES | BARON | S | 1600 | LESLIE | |||
| S thru Z | LINDSAY | LORD | S | 1455 | LINDSAY | |||
| LINDSEY | MARQUESS | E | 1706 | BERTIE | ||||
| LINGEN OF LINGEN | BARON | UK | 1885 | LINGEN | 1905 | |||
| LINLITHGOW | EARL | S | 1600 | LIVINGSTON | ||||
| LINTON AND CABARSTOWN | BARON | S | 1683 | STUART | DORMANT 1861 | |||
| LISBURNE | VISCOUNT | I | 1685 | LOFTUS | ||||
| LISGAR | BARON | UK | 1870 | YOUNG | 1887 | |||
| LISMORE OF SHANBALLY | BARON | I | 1785 | O’CALLAGHAN | 1898 | |||
| LISMORE OF SHANBALLY | VISCOUNT | I | 1806 | O’CALLAGHAN | 1898 | |||
| LISMORE OF SHANBALLY CASTLE | BARON | UK | 1838 | O’CALLAGHAN | 1898 | |||
| LISTER OF LYME | BARON | UK | 1897 | LISTER | 1912 | |||
| LIVERPOOL | EARL | GB | 1746 | JENKINSON | ||||
| LIVERPOOL | EARL | GB | 1796 | 1851 | ||||
| LIVINGSTON | LORD | S | 1449 | LIVINGSTON | ||||
| LIVINGSTON | LORD | S | 1633 | LIVINGSTON | ||||
| LIVINGSTON | LORD | S | 1660 | LIVINGSTON | ||||
| LLANDAFF | BARON | I | 1783 | MATHEW | ||||
| LLANDAFF | VISCOUNT | I | 1793 | MATHEW | ||||
| LLANDAFF | EARL | I | 1797 | MATHEW | ||||
| LLANDAFF | VISCOUNT | UK | 1895 | MATTHEWS | 1913 | |||
| LLANDOVER | BARON | UK | 1859 | HALL | 1867 | |||
| LLANGATTOCK | BARON | UK | 1892 | ROLLS | 1916 | |||
| LLEWELLIN OF UPTON | BARON | UK | 9 | 12 | 1945 | LLEWELLIN | 1957 | |
| LOCHEE | BARON | UK | 1908 | ROBERTSON | 1911 | |||
| LOCHINVAR | LORD | S | 1633 | GORDON | ||||
| LOFTUS | VISCOUNT | I | 1622 | LOFTUS | ||||
| LOFTUS | BARON | I | 1751 | LOFTUS | ||||
| LOFTUS | VISCOUNT | I | 1756 | LOFTUS | ||||
| LONDESBOROUGH | EARL | UK | 7 | 1 | 1887 | DENISON | 1937 | |
| LONDONDERRY | EARL | I | 1622 | RIDGEWAY | ||||
| LONDONDERRY | BARON | I | 1719 | PITT | ||||
| LONDONDERRY | EARL | I | 1726 | PITT | ||||
| LONGFORD | VISCOUNT | I | 1675 | AUNGIER | ||||
| LONGFORD | EARL | I | 1677 | AUNGIER | ||||
| LONGFORD | VISCOUNT | I | 1713 | FLEMING | ||||
| LONGUEVILLE | VISCOUNT | E | 1690 | YELVERTON | ||||
| LONGUEVILLE | BARON | I | 1795 | LONGFIELD | ||||
| Peerage Index | LONGUEVILLE | VISCOUNT | I | 1800 | LONGFIELD | |||
| A thru C | LONGVILLIERS | BARON | E | 1342 | LONGVILLIERS | |||
| D thru K | LONSDALE | VISCOUNT | E | 1696 | LOWTHER | |||
| L thru R | LONSDALE | EARL | GB | 1784 | LOWTHER | |||
| S thru Z | LOREBURN | BARON | UK | 1906 | REID | 1923 | ||
| LOREBURN | EARL | UK | 1911 | REID | 1923 | |||
| LORN | LORD | S | 1439 | STEWART | ||||
| LOUGHBOROUGH | BARON | GB | 1780 | WEDDERBURN | ||||
| LOUGHUYRE | BARON | I | 1718 | FANE | ||||
| LOUTH | EARL | I | 1319 | BERMINGHAM | ||||
| LOUTH | EARL | I | 1759 | BERMINGHAM | ||||
| LOVEL | VISCOUNT | E | 1483 | LOVEL | ||||
| LOVEL OF KARY | BARON | E | 1348 | LOVEL | ||||
| LOVEL OF MINSTER LOVEL | BARON | GB | 1728 | LOVEL | ||||
| LOVEL OF TICHMERSH | BARON | E | 1299 | LOVEL | ||||
| LOVELACE | BARON | E | 1627 | LOVELACE | ||||
| LOWTHER | BARON | E | 1696 | LOWTHER | ||||
| LOWTHER | EARL | GB | 1784 | LOWTHER | ||||
| LOWTHER | VISCOUNT | GB | 1784 | LOWTHER | ||||
| LUCAN | EARL | I | 1689 | SARSFIELD | ||||
| LUCAS | BARON | E | 1644 | LUCAS | ||||
| LUCY OF EGREMONT | BARON | E | 1320 | LUCY | ||||
| LUDLOW | EARL | GB | 1760 | LUDLOW | ||||
| LUDLOW | BARON | UK | 1831 | LUDLOW | ||||
| LUDLOW OF HEYWOOD | BARON | UK | 1897 | LOPES, FRANCO | 1922 | |||
| LUGARD | BARON | UK | 1928 | LUGARD | 1945 | |||
| LUMLEY | BARON | E | 1384 | LUMLEY | ||||
| LUMLEY | BARON | E | 1547 | LUMLEY | ||||
| LUNDIE | LORD | S | 1642 | CAMPBELL | ||||
| LUTEREL | BARON | E | 1295 | LUTEREL | ||||
| LUXBOROUGH | BARON | I | 1746 | KNIGHT | ||||
| LYLE | LORD | S | 1446 | LYLE | ||||
| LYLE OF WESTBOURNE | BARON | UK | 9 | 13 | 1945 | LYLE | 1976 | |
| LYNDHURST | BARON | UK | 1827 | COPLEY | 1863 | |||
| LYNDOCH | BARON | UK | 1814 | GRAHAM | ||||
| LYONS | BARON | UK | 1856 | LYONS | 1887 | |||
| LYONS | VISCOUNT | UK | 1881 | LYONS | 1887 | |||
| LYTTLETON | BARON | E | 1640 | LYTTLETON | ||||
| LYTTLETON | BARON | GB | 1756 | LYTTLETON | ||||
| MABANE | BARON | UK | 6 | 15 | 1962 | MABANE | 1969 | |
| MACARTNEY | BARON | I | 1767 | MACARTNEY | ||||
| Peerage Index | MACARTNEY | VISCOUNT | I | 1793 | MACARTNEY | |||
| A thru C | MACARTNEY | EARL | I | 1794 | MACARTNEY | |||
| D thru K | MACARTNEY | BARON | GB | 1796 | MACARTNEY | |||
| L thru R | MACAULAY | BARON | UK | 1857 | MACAULAY | 1859 | ||
| S thru Z | MACCLESFIELD | EARL | E | 1679 | GERARD | |||
| MACDONALD OF EARNSCLIFFE | BARON | UK | 1891 | MACDONALD | 1920 | |||
| MACDONELL AND ARRAS | LORD | S | 1660 | MACDONELL | ||||
| MACDONNELL | BARON | UK | 7 | 2 | 1908 | MACDONNELL | 1925 | |
| MACDUFF | VISCOUNT | I | 1759 | DUFF | 1912 | |||
| MACDUFF | MARQUESS | UK | 1889 | DUFF | 1912 | |||
| MACGILL | LORD | S | 1651 | MACGILL | ||||
| MACKENZIE | BARON | S | 1609 | MACKENZIE | ||||
| MACLEOD | LORD | S | 1685 | MACKENZIE | ||||
| MADELEY | EARL | UK | 7 | 3 | 1911 | CREWE-MILNES, OFFLEY | 1945 | |
| MADERTY | LORD | S | 1609 | DRUMMOND | ||||
| MAENAN OF ELLESMERE | BARON | UK | 6 | 23 | 1948 | TAYLOR | 1951 | |
| MAGENNIS | VISCOUNT | I | 1623 | MAGENNIS | ||||
| MAGHERAMORNE | BARON | UK | 7 | 5 | 1887 | MCGAREL-HOGG | 1957 | |
| MAGUIRE | BARON | I | 1627 | MAGUIRE | ||||
| MALCOLM OF POLTALLOCH | BARON | UK | 1896 | MALCOLM | 1902 | |||
| MALLOWNE | BARON | I | 1622 | MALLOWNE O’MULLAN | ||||
| MALMESBURY | MARQUESS | GB | 1715 | WHARTON | ||||
| MALTON | BARON | GB | 1728 | WATSON (WENTWORTH) | ||||
| MALTON | EARL | GB | 1734 | WATSON (WENTWORTH) | ||||
| MALTON | BARON | I | 1750 | WENTWORTH | ||||
| MALTON | EARL | I | 1750 | WENTWORTH | ||||
| MAMHEAD | BARON | UK | 1931 | NEWMAN | 1945 | |||
| MANNY | BARON | E | 1347 | MANNY | ||||
| MANSEL | BARON | GB | 1712 | MANSEL | ||||
| MANSFIELD | VISCOUNT | E | 1620 | CAVENDISH | ||||
| MANVERS | EARL | UK | 4 | 9 | 1806 | PIERREPONT, MEDOWS | 1955 | |
| MARCH | EARL | E | 1328 | MORTIMER | ||||
| MARCH | EARL | E | 1479 | PLANTAGENET | ||||
| MARCH | EARL | S | 1582 | STEWART | ||||
| MARCH | EARL | E | 1619 | STUART | ||||
| MARCH | MARQUESS | S | 1672 | MAITLAND | ||||
| MARCH | EARL | S | DUNBAR | |||||
| MARCHMONT | EARL | S | 1697 | HUME | ||||
| MARISCHAL | EARL | S | 1458 | KEITH | ||||
| MARJORIBANKS | BARON | UK | 1873 | MARJORIBANKS, ROBERTSON | 1873 | |||
| Peerage Index | MARKS | BARON | UK | 1929 | MARKS | 1938 | ||
| A thru C | MARLBOROUGH | EARL | E | 1626 | LEY | |||
| D thru K | MARMION OF WETRINGTON | BARON | E | 1313 | MARMION | |||
| L thru R | MARMYON | BARON | E | 1264 | MARMYON | |||
| S thru Z | MARNEY | BARON | E | 1523 | MARNEY | |||
| MARR | EARL | S | 1426 | STEWART | ||||
| MARR | EARL | S | 1457 | STEWART | ||||
| MARR AND GARVIACH | EARL | S | 1486 | STEWART | ||||
| MARSHAL | BARON | E | 1309 | MARSHAL | ||||
| MARSHALL OF CHIPSTEAD | BARON | UK | 1 | 14 | 1921 | MARSHALL | 1936 | |
| MARTIN | BARON | E | 1295 | MARTIN | ||||
| MARYBOROUGH | BARON | I | 1821 | WELLESLEY | 1863 | |||
| MASHAM | BARON | GB | 1712 | MASHAM | ||||
| MASHAM OF SWINTON | BARON | UK | 7 | 15 | 1891 | CUNLIFFE-LISTER | 1924 | |
| MASSAREENE | EARL | I | 1756 | SKEFFINGTON | ||||
| MATHERS | BARON | UK | 1 | 30 | 1952 | MATHERS | 1965 | |
| MAUDUIT | BARON | E | 1342 | MAUDUIT | ||||
| MAUGHAM | BARON | UK | 1935 | MAUGHAM | 1981 | |||
| MAUGHAM | VISCOUNT | UK | 9 | 22 | 1939 | MAUGHAM | 1981 | |
| MAULE OF WHITECHURCH | VISCOUNT | I | 1743 | MAULE | ||||
| MAULEY | BARON | E | 1295 | MAULEY | ||||
| MAYNARD | BARON | E | 1611 | MAYNARD | ||||
| MAYNARD | BARON | I | 1620 | MAYNARD | 1865 | |||
| MAYNARD | BARON | E | 1628 | MAYNARD | ||||
| MAYNARD | VISCOUNT | GB | 1766 | MAYNARD | 1865 | |||
| MCCORQUODALE OF NEWTON | BARON | UK | 9 | 2 | 1955 | MCCORQUODALE | 1971 | |
| MCENTEE | BARON | UK | 6 | 26 | 1951 | MCENTEE | 1953 | |
| MEINILL | BARON | E | 1295 | MEINILL | ||||
| MEINILL | BARON | E | 1313 | MEINILL | ||||
| MEINILL | BARON | E | 1336 | MEINILL | ||||
| MELBOURNE | BARON | I | 6 | 8 | 1770 | LAMB | 1853 | |
| MELBOURNE | VISCOUNT | I | 1 | 11 | 1781 | LAMB | 1853 | |
| MELBOURNE | BARON | UK | 8 | 11 | 1815 | 1853 | ||
| MELCOMBE | BARON | GB | 1761 | DODINGTON | ||||
| MELFORT | VISCOUNT | S | 4 | 14 | 1685 | DRUMMOND | DORMANT 1902 | |
| MELFORT | EARL | S | 8 | 12 | 1686 | DRUMMOND | DORMANT 1902 | |
| Peerage Index | MELFORT | DUKE | S | 1690 | DRUMMOND | EXTINCT - ATTAINTED 1694 | ||
| A thru C | MELGUM | VISCOUNT | S | 1627 | GORDON | |||
| D thru K | MELROSE | LORD | S | 1609 | RAMSAY | |||
| L thru R | MELROSE (OR MELROS) OF TYNINGHAME | BARON | UK | 1827 | HAMILTON | 1858 | ||
| S thru Z | MENTEITH | EARL | S | 1258 | MENTEITH | |||
| MEREDYTH | BARON | UK | 1866 | SOMERVILLE | 1929 | |||
| MERRIMAN OF KNUTSFORD | BARON | UK | 1 | 27 | 1941 | MERRIMAN | 1962 | |
| METCALFE | BARON | UK | 1845 | METCALFE | ||||
| METHVEN | LORD | S | 1528 | STEWART | ||||
| MICHELHAM | BARON | UK | 12 | 28 | 1905 | STERN | 1984 | |
| MICHLETHWAIT | VISCOUNT | I | 1727 | MICHLETHWAIT | ||||
| MICKLETHWAIT | BARON | I | 1724 | MICKLETHWAIT | ||||
| MIDDLESEX | EARL | E | 1622 | CRANFIELD | ||||
| MIDDLETON | EARL | S | 1660 | MIDDLETON | ||||
| MIDLETON | EARL | UK | 2 | 2 | 1920 | BRODRICK | 1979 | |
| MILBROKE | BARON | E | 1442 | CORNWALL | ||||
| MILDMAY OF FLETE | BARON | UK | 11 | 20 | 1922 | MILDMAY | 1950 | |
| MILFORD | BARON | I | 1776 | PHILIPPS | ||||
| MILFORD | BARON | UK | 1847 | PHILIPPS | 1857 | |||
| MILLTOWN | EARL | I | 5 | 20 | 1763 | LEESON | DORMANT 1891 | |
| MILNER | VISCOUNT | UK | 7 | 15 | 1902 | MILNER | 1925 | |
| MILNER OF ST. JAMES’S LONDON | BARON | UK | 5 | 27 | 1901 | MILNER | 1925 | |
| MILSINGTON | VISCOUNT | S | 1703 | COLYEAR | ||||
| MILTON | VISCOUNT | I | 7 | 21 | 1716 | WENTWORTH-FITZWILLIAM | 1979 | |
| MILTON | BARON | GB | 4 | 19 | 1742 | WENTWORTH-FITZWILLIAM | 1979 | |
| MILTON | BARON | I | 1753 | DAMER | ||||
| MILTON | BARON | GB | 1762 | DAMER | ||||
| MILTON | VISCOUNT | GB | 1792 | DAMER | ||||
| MOELS | BARON | E | 1299 | MOELS | ||||
| MOHUN | BARON | E | 1299 | MOHUN | ||||
| MOHUN OF OKEHAMPTON | BARON | E | 1628 | MOHUN | ||||
| MOIRA | EARL | GB | 1761 | RAWDON | ||||
| MOLINES | BARON | E | 1347 | MOLINES | ||||
| MOLYNEUX | VISCOUNT | I | 12 | 22 | 1628 | MOLYNEUX | 1972 | |
| MONCKTON | BARON | UK | 7 | 4 | 1887 | MONCKTON-ARUNDELL | 1971 | |
| MONMOUTH | EARL | E | 1626 | CAREY | ||||
| MONMOUTH | DUKE | E | 2 | 14 | 1663 | SCOTT (FITZ ROY) | 1685 | |
| Peerage Index | MONMOUTH | EARL | E | 1689 | MORDAUNT | |||
| A thru C | MONSON | VISCOUNT | I | 1628 | MONSON | |||
| D thru K | MONTACUTE | BARON | E | 1300 | MONTACUTE | |||
| L thru R | MONTACUTE | BARON | E | 1342 | MONTACUTE | |||
| S thru Z | MONTACUTE | BARON | E | 1357 | MONTACUTE | |||
| MONTAGU | BARON | E | 1294 | NEVILL | ||||
| MONTAGU | MARQUESS | E | 1470 | NEVILL | ||||
| MONTAGU | VISCOUNT | E | 1554 | BROWNE | ||||
| MONTAGU | EARL | E | 4 | 9 | 1689 | MONTAGU | ||
| MONTAGU | DUKE | E | 4 | 12 | 1705 | MONTAGU | 1749 | |
| MONTAGU | DUKE | GB | 11 | 5 | 1766 | MONTAGU | 1790 | |
| MONTAGU OF BOUGHTON | BARON | E | 6 | 29 | 1621 | MONTAGU | 1749 | |
| MONTAGU OF BOUGHTON | BARON | GB | 5 | 8 | 1762 | MONTAGU | 1770 | |
| MONTAGU OF BOUGHTON | BARON | GB | 8 | 21 | 1781 | MONTAGU | 1845 | |
| MONTAGUE | BARON | E | 1553 | POLE | ||||
| MONTALT | BARON | E | 1295 | MONTALT | ||||
| MONTEAGLE | BARON | E | 11 | 23 | 1514 | PARKER, STANLEY | ||
| MONTEITH AND AIRTH | EARL | S | 1427 | GRAHAM | ||||
| MONTFORD | BARON | GB | 1741 | 1851 | ||||
| MONTFORT | BARON | E | 1295 | MONTFORT | ||||
| MONTFORT | BARON | GB | 1741 | BROMLEY | ||||
| MONTGOMERY | BARON | E | 1342 | MONTGOMERY | ||||
| MONTGOMERY | VISCOUNT | I | 1622 | MONTGOMERY | ||||
| MONTHERMER | BARON | E | 3 | 4 | 1309 | MONTHERMER, NEVILL | ||
| MONTJOY OF THE ISLE OF WIGHT | BARON | GB | 1711 | WINDSOR | ||||
| MONTROSE | DUKE | S | 1488 | LINDSAY | ABEYANT 1495 (LACK OF INTEREST AMONG HEIRS) | |||
| MONYPENNY | LORD | S | 1464 | MONYPENNY | ||||
| MOORE | BARON | I | 1715 | MOORE | ||||
| MOORE OF MOORE PLACE | BARON | UK | 1 | 17 | 1801 | MOORE | 1892 | |
| MORAY | EARL | S | 1130 | ANGUS | ||||
| MORAY | EARL | S | 1312 | RANDOLPH | ||||
| MORAY | EARL | S | 1372 | DUNBAR | ||||
| MORDAUNT | VISCOUNT | E | 1659 | MORDAUNT | ||||
| MORDINGTON | LORD | S | 1641 | DOUGLAS | ||||
| MORLEY | BARON | E | 12 | 29 | 1299 | MORLEY, PARKER, LOVEL | ABEYANT 1686 | |
| MORLEY OF BLACKBURN | VISCOUNT | UK | 1908 | MORLEY | 1923 | |||
| MORTIMER | BARON | E | 1294 | MORTIMER | ||||
| MORTIMER OF CHIRKE | BARON | E | 1307 | MORTIMER | ||||
| MORTIMER OF RICHARD’S CASTLE | BARON | E | 1297 | MORTIMER | ||||
| MORTMORE | EARL | S | 1703 | COLYEAR | ||||
| Peerage Index | MORTON | EARL | S | 1458 | DOUGLAS, MAXWELL | |||
| A thru C | MOUNT ALEXANDER | EARL | I | 1661 | MONTGOMERY | |||
| D thru K | MOUNT CASHEL | VISCOUNT | I | 1705 | DAVYS | |||
| L thru R |