1285 - 1356 (71 years)
| 3rd Earl of March and Earl of Ulster Edmund de Mortimer | |
| B: | 1351 |
| Isle of Anglesey, Wales | |
| D: | 27 Dec 1381 |
| Cork, Cork, Ireland | |
| Philippa Plantagenet | |
| B: | 16 Aug 1355 |
| Elham, Kent, England | |
| D: | 5 Jan 1381 |
| Cork, Cork, Ireland | |
| 2nd Earl of March Roger de Mortimer | |
| B: | 11 Nov 1328 |
| Ludlow, Shropshire, England | |
| D: | 26 Feb 1360 |
| France | |
| Philippa Montagu | |
| B: | 1333 |
| England | |
| D: | 5 Jan 1381 |
| Berkshire, England | |
| Edmund de Mortimer | |
| B: | 1306 |
| D: | 1331 |
| Baroness de Mortimer de Bohun Elizabeth Badlesmere | |
| B: | 1313 |
| Kent, England | |
| M: | 27 Jun 1316 |
| Shropshire, England | |
| D: | 8 Jun 1356 |
| London, England | |
| Sir James Berkeley | |
| B: | Berkeley, Gloucestershire, England |
| D: | 13 Jun 1405 |
| England | |
| 4th Lord Berkeley Maurice Berkeley | |
| B: | 1330 |
| Berkeley, Gloucestershire, England | |
| D: | 1363 |
| Baroness Berkeley Elizabeth de Spenser | |
| B: | Abt 1327 |
| Stoke Albany, Northamptonshire, England | |
| M: | Aug 1338 |
| D: | 13 Jul 1389 |
| Thornbury, Gloucestershire, England | |
| Margaret de Mortimer | |
| B: | 2 May 1304 |
| D: | 5 May 1337 |
| 3rd Lord Berkeley Sir Thomas de Berkeley | |
| B: | 1296 |
| England | |
| M: | May 1319 |
| D: | 27 Oct 1361 |
| Gloucestershire, England | |
| 2nd Baroness Geneville Joan de Geneville | |
| B: | 2 Feb 1285 |
| Ludlow, Shropshire, England | |
| D: | 19 Oct 1356 |
| England | |
| 3rd Baron Mortimer, 1st Earl of March Roger de Mortimer | |
| B: | 25 Apr 1287 |
| Thornbury, Herefordshire, England | |
| M: | 1301 |
| D: | 29 Nov 1330 |
| London, England | |
We make every effort to document our research. There is a lot of information that I do not have, and I know there are mistakes in this tree. My feelings will not be hurt if you give me corrections or additional information, especially if you can provide sources for the information.
