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Male Gilbert De Clare Click to view Gilbert De Clare in the family tree

Gilbert was born in 1182 in Hertford, Hertfordshire, England.1   Gilbert's father was Richard De Clare and his mother was Amice Fitzrobert.  His paternal grandparents were Roger De Clare and Maud (Matilda) De Saint Hilary; his maternal grandparents were William Fitzrobert and Hawise DeBeaumont Leicester. He had a brother and a sister, named Richard De and Maud (Matilda) De.  He was the oldest of the three children.  He died at the age of 48 on October 25th, 1230 in Penrose, Brittany, France.1 

Family Details of Gilbert's family

Family Details of Gilbert's family with Isabel Marshall

1 phelps1609.FTW
Further source/citation:
World Family Tree Vol. 16, Ed. 1 @ Tree #1609