Prince / Duke / Marquess / Earl / Viscount / Lord
| Name | Date of Birth | Date of Death | Beamish Person Id | Rush Id |
|---|---|---|---|---|
| MAITLAND Frederick Colin | 1868-04-12 | 1931-09-14 | 6637 | |
| MAITLAND BIDDULPH Anthony Nicholas Colin | 3941 | |||
| MAKGILL George Hubbard | 1934-01-07 | 2003-01-03 | 4462 | |
| MAKGILL George | 1868-12-24 | 1926-10-17 | 8723 | |
| MAKGILL John | 1836-02-06 | 1906-11-14 | 8722 | |
| MAKGILL James | 1663-05-05 | 4461 | ||
| MAKGILL John Donald Alexander Arthur | 1899-12-31 | 1986-01-24 | 4584 | |
| MAKGILL Ian Arthur Alexander | 4463 | |||
| MAKGILL John | 1817-05-03 | 8720 | ||
| MAKGILL George | 1812-12-23 | 1878-09-21 | 8721 | |
| MAKINS Roger Mellor | 1904-02-03 | 1996-11-09 | 2818 | |
| MAKINS Christopher James | 1942-07-23 | 2006-01-28 | 5156 | |
| MALCOLM John Wingfield | 1833-05-16 | 1902-03-06 | 2590 | 2562 |
| MALLOCH BROWN George Mark | 2232 | |||
| MALONE Richard | 1816-04-14 | 3011 | ||
| MANCE Jonathan Hugh | 2175 | |||
| MANCROFT Stormont Mancroft Samuel | 1914-07-27 | 1987-09-14 | 4523 | |
| MANCROFT Benjamin Lloyd Stormont | 4305 | |||
| MANDELSON Peter Benjamin | 2248 | 465 | ||
| MANN James | 1778-09-20 | 1852-05-21 | 6701 |