Sir Roger de Mortimer 8th Baron Mortimer of Wigmore, 1st Earl of March
- Born: 25 Apr 1287
- Marriage (1): Joan de Geneville before 6 Oct 1306
- Died: 29 Nov 1330 at age 43
8th Baron Mortimer of Wigmore, 1st Earl of March, Lord of Leix, Ireland.
Created Earl of March, October 1328.
Granted seisin of lands in Ireland, 1308, by Joan's grandfather, Geoffrey.
Source: Ancestral Roots of Certain American Colonists Who Came to America before 1700 by Frederick Lewis Weis and Walter Lee Sheppard, Jr, ed. by William R. Beall & Kaleen E. Beall (Baltimore, 2008), line 176B-31 and 71A-32 (Joan de Geneville)
Roger married Joan de Geneville, daughter of Sir Piers de Geneville Lord of Walterstone-Saunton-Lacy and Jeanne de Lusignan de la Marche, before 6 Oct 1306. (Joan de Geneville was born 2 Feb 1285 or 1286 and died on 19 Oct 1356.)