| Monck (Barony) |
George Monck - Wed 7th Jul 1660
|
6 October 1688 |
- |
| Monson (Barony) |
William Monson - Wed 23rd Aug 1628
|
- |
- |
| Montagu (Barony) |
Edward Montagu - Mon 12th Jul 1660
|
- |
- |
| Montgomery (Viscountcy) |
William Herbert - Mon 24th Mar 1687
|
8 March 1748 |
- |
| of Monthermer (Marquessate) |
George Montagu - Wed 5th Nov 1766
|
23 May 1790 |
- |
| Monthermer (Viscountcy) |
Ralph Montagu - Sat 9th Apr 1689
|
- |
- |
| of Monthermer (Marquessate) |
Ralph Montagu - Tue 14th Apr 1705
|
- |
- |
| Mordaunt (Barony) |
John Mordaunt - Thu 10th Jul 1659
|
16 June 1814 |
- |
| Morpeth (Viscountcy) |
Charles Howard - Wed 20th Apr 1661
|
- |
- |
| Mountcastle (Barony) |
James Hamilton - Fri 2nd Dec 1701
|
- |
- |
| of Mount Charles (Earldom) |
Henry Conyngham - Mon 15th Jan 1816
|
- |
- |
| Mount Charles (Viscountcy) |
Henry Conyngham - Tue 21st Nov 1797
|
- |
- |
| Mountjoy (Viscountcy) |
John Stuart - Tue 1st Mar 1796
|
- |
- |
| Moyorta (Barony) |
Daniel O'Brien - Mon 17th Jul 1662
|
- |
- |
| of Munster (Earldom) |
William Henry - Wed 20th May 1789
|
- |
26 June 1830 |
| Murray (Barony) |
John Murray - Fri 18th Aug 1786
|
8 May 1957 |
- |
| Murray, Balvenie and Gask (Lordship) |
John Murray - Sat 30th Jun 1703
|
- |
- |
| Navan (Barony) |
Roger Jones - Fri 25th Aug 1628
|
- |
- |
| Nevill (Viscountcy) |
George Nevill - Mon 17th May 1784
|
- |
- |
| Newbury (Barony) |
Charles FitzRoy - Tue 10th Sep 1675
|
18 May 1774 |
- |