The St. John Genealogy Project
Origin and Ancestry DNA Database & Electronic Archive
 MaleRoger Mortimer, 1st Earl of March; m. Joan Greneville |
| Birth | abt. 1287 | |
| Death | 1330 | |
| Burial | ||
| Marriage | ||
| Father | Edmund Mortimer, m. Margaret Fiennes | F5781 Group Sheet | |
| Mother | Margaret Fiennes, m. Edmund Mortimer | F5781 Group Sheet | |
| Male + Edmund Mortimer, Baron of Wigmore; m. Elizabeth Baldsmere |
| Birth | Abt 1300 | of, Wigmore, Herefordshire, England  |
| Death | Yes, date unknown | Stanton-Lacy, Shropshire, England, UK |
| Burial | ||
| Spouse | Elizabeth Baldesmere, Mortimer, de Bohun | F72248 (Wife - 2nd Marriage) | |
| Marriage | Yes, date unknown | |
 Female+ Margaret de Mortimer, de Berkeley |
| Birth | 1308 | Ludlow, Wigmore, Herefordshire, England, UK |
| Death | 5 May 1337 | Berkeley Castle, Gloucestershire, England, UK |
| Burial | ||
| Spouse | Thomas de Berkeley, 3rd Baron Berkeley, m. Margaret Mortimer | F399053 | |
| Marriage | ||
| Female + Katherine Mortimer, m. Thomas Beauchamp |
| Birth | abt. 1314 | Wigmore, Herefordshire, England, UK |
| Death | Between 4 Aug 1369 and 6 Sep 1369 | |
| Burial | Warwick Collegiate Church of St. Mary, Warwick, Warwickshire, England, UK |
|
| Spouse | Thomas Beauchamp, 11th Earl of Warwick, Marshal of England m. Katherine Mortimer | F5778 | |
| Marriage | 1337 | |
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