F, (circa 1150 - )
Father-Biological*William I b. 1143, d. 4 Dec 1214
Mother-Biological*(name unknown) Avenel
Family Lines
Roy Line

Boudreau Line
Last Edited=18 Apr 2023
     Isabel was born circa 1150. She was the daughter of William I and (name unknown) Avenel.

Isabel married Sir Robert de Ros, son of Everard de Ros and Roysia Trusbut, in 1191.

Child of Isabel and Sir Robert de Ros