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Female Countess of Arundel Isabella de Mortimer Click to view Countess of Arundel Isabella de Mortimer in the family tree

Isabella was born in 1248 in Wigmore, Herefordshire, England.1  Isabella's father was Baron Wigmore Roger de Mortimer and her mother was Maud de Braose.  Her paternal grandparents were Earl of Wigmore Ralph de Mortimer and Gwladys (Ddu, The Dark Eyed) verch Llewelyn; her maternal grandparents were Lord Brecknock, Abergavenny William de Braose and Eva Marshall. She had two brothers and a sister, named Roger, Edmund and Margaret.  She was the oldest of the four children. She had a half-sister named Gwendaline.  She died at the age of 26 on August 10th, 1274 in Arundel, Sussex, England.1 

Family Details of Isabella's family with 6th Earl of Arundel John Fitzalan III

1 http://wc.rootsweb.com/cgi-bin/igm.cgi?op=PED&db=jdp-fam&id=I11511&style=TABLE

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