man Baron Sir Edmund of Wigmore Mortimer‏‎, son of Baron Roger de Mortimer and Maud de Braiose‏.
Born ‎± 1261, died ‎ Jul 17, 1304 at Wigmore Castle‎, approximately 43 years, cause of death: Battle casualty
pg 32 & 76, "Ancestral Roots of Sixty Colonists, etc" by Frederick Lewis Weiss, 6th Edition

pg 384, " A Genealogical History of the Dormant, Abeyant, Forfeited and Extinct Peerages of the British Empire" by Sir Bernard Burke, published 1883

Married/ Related to:

woman Margaret Fiennes‏‎, daughter of William II of Fiennes and Blanche Brienne‏.
Born ‎± 1270 at Picardy, Normandy, France, died ‎ Feb 7, 1333/1334‎, approximately 63 years
pg 76, "Ancestral Roots of Sixty Colonists etc" by Frederick Lewis Weiss, 6th Edition

pg 384, " A Genealogical History of the Dormant, Abeyant, Forfeited and Extinct Peerages of the British Empire" by Sir Bernard Burke, published 1883

Child:

1.
man Earl Sir Roger of March Mortimer‏
Born ‎ Apr 25, 1287 at Thornbury, Herf, England., died ‎ Nov 29, 1330 at Elms Tyburn,, England.‎, 43 years
pg 32 & 76, "Ancestral Roots of Sixty Colonists, etc" by Frederick Lewis Weiss, 6th Edition

pg 384, " A Genealogical History of the Dormant, Abeyant, Forfeited and Extinct Peerages of the British Empire" by Sir Bernard Burke, published 1883