Roger MORTIMER, 1st Earl of March
1287 - 1330 (43 years)
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| Thomas CLIFFORD, 8th Baron de Clifford 1414-1455 |
| Thomas CLIFFORD, 8th Baron de Clifford | |
| B: | 25 Mar 1414 |
| D: | 22 May 1455 |
| John CLIFFORD, 7th Baron de Clifford, 7th Lord of the Honor of Sk | |
| B: | Abt 1389 |
| D: | 13 Mar 1422 |
| Meaux, Ile-de-France, France | |
 | Elizabeth PERCY Abt 1395-1436 |
| Elizabeth PERCY | |
| B: | Abt 1395 |
| D: | 26 Oct 1436 |
| Thomas DE CLIFFORD, 6th Baron de Clifford | |
| D: | Abt 1391 |
| Elizabeth DE ROS 1424- |
| Elizabeth DE ROS | |
| B: | 1424 |
| M: | Bef 1379 |
| William CLIFFORD, Governor of Berwick | |
| D: | 1419 |
| Ralph DE GREYSTOKE, 5th Baron Greystoke 1406-1487 |
| Ralph DE GREYSTOKE, 5th Baron Greystoke | |
| B: | 9 Sep 1406 |
| D: | 1 Jun 1487 |
| John DE GREYSTOKE, 4th Baron Greystoke Abt 1390-1436 |
| John DE GREYSTOKE, 4th Baron Greystoke | |
| B: | Abt 1390 |
| D: | 1436 |
| Elizabeth FERRERS 1393-1474 |
| Elizabeth FERRERS | |
| B: | 1393 |
| M: | 28 Oct 1407 |
| Greystoke, Cumbria, England | |
| D: | 1474 |
| York, Yorkshire, England | |
| Ralph DE GREYSTOKE, 3rd Baron Greystoke 1353-1418 |
| Ralph DE GREYSTOKE, 3rd Baron Greystoke | |
| B: | 18 Oct 1353 |
| Ravensworth, Yorkshire, England | |
| D: | 6 Apr 1418 |
| Maud DE BEAUCHAMP -1403 |
| Maud DE BEAUCHAMP | |
| D: | 1403 |
| Roger DE CLIFFORD, 5th Baron de Clifford, 9th Lord Clifford, 5th Baro | |
| B: | 10 Jul 1333 |
| D: | 13 Jul 1389 |
| Katherine MORTIMER, Countess of Warwick Abt 1314-1369 |
| Katherine MORTIMER, Countess of Warwick | |
| B: | Abt 1314 |
| Ludlow, Shropshire, England | |
| D: | 4 Aug 1369 |
| Sir Thomas DE BEAUCHAMP, 11th Earl of Warwick, KG Abt 1313-1369 |
| Sir Thomas DE BEAUCHAMP, 11th Earl of Warwick, KG | |
| B: | Abt 14 Feb 1313 |
| D: | 13 Nov 1369 |
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| Roger MORTIMER, 1st Earl of March 1287-1330 |
| Roger MORTIMER, 1st Earl of March | |
| B: | 25 Apr 1287 |
| D: | 29 Nov 1330 |
| Joan DE GRENVILLE, 2nd Baroness Grenville, Countess of March, Barones | |
| B: | 2 Feb 1286 |
| D: | 9 Oct 1356 |