Prince / Duke / Marquess / Earl / Viscount / Lord
| Name | Date of Birth | Date of Death | Beamish Person Id | Rush Id |
|---|---|---|---|---|
| MARSHAM Charles | 1744-09-28 | 1811-03-01 | 27 | |
| MARSHAM Charles | 1808-07-30 | 1874-09-03 | 5687 | 4941 |
| MARTIN Michael John | 1945-07-03 | 2018-04-29 | 2260 | 473 |
| MARTYN-HEMPHILL Peter Patrick Fitzroy Martyn | 1928-09-05 | 2012-04-06 | 4698 | |
| MARTYN-HEMPHILL Charles Andrew Martyn | 4277 | |||
| MASHAM Samuel | 1758-10-16 | 3496 | ||
| MASON Roy | 1924-04-18 | 2015-04-19 | 1714 | 8884 |
| MASON William Keith | 1962-03-27 | 1988-05-15 | 5262 | |
| MASON William James Peake | 1862-11-11 | 1947-07-21 | 2783 | |
| MASON Keith Alexander Henry | 1923-02-23 | 1977-04-21 | 5783 | |
| MASON Glyn Keith Murray | 1887-05-29 | 1972-12-31 | 5782 | 7955 |
| MASON-VILLIERS George | 1751-07-13 | 1800-07-14 | 8543 | |
| MASSEY Nathaniel William | 1773-05-23 | 1810-01-26 | 7611 | |
| MASSEY Lionel Edward | 1837-04-20 | 1922-10-13 | 7614 | |
| MASSEY Eyre Challoner Henry | 1830-04-29 | 1897-12-16 | 7613 | |
| MASSEY Eyre | 1798-05-06 | 1872-11-18 | 7612 | |
| MASSEY Eyre Nathaniel | 1880-02-08 | 1952-11-04 | 7615 | |
| MASSEY Eyre | 1719-05-24 | 1804-05-17 | 2980 | |
| MASSY Hugh | 1761-10-24 | 1812-06-20 | 7136 | |
| MASSY Hugh Hamon Ingoldsby | 1827-04-14 | 1874-02-27 | 7138 |