About Gundreda ? de Lancaster
GIL:BERT FIL KETELL 4th Baron of Kendall living temp. King Henry I, left issue by Beatrice, daughter of Ribald of Middleham, brother of Alan, Earl of the East Angles, a son and successor, William fil Gilbert, 5th Baron of Kendall, made by King Henry II, Constable of Lancaster Castle whereupon he took the surname of Lancaster.
By his wife Gundreda, daughter of William 2nd Earl of Warren and granddaughter of Gundreda, daughter of William the Conqueror, he has issue.