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Male Alphonse De Brienne Click to view Alphonse De Brienne in the family tree

Alphonse De was born about 1176.1   Alphonse De's father was Jean Count De Brienne and his mother was Berengaria Alfonsez Princess Leon.  His maternal grandfather was Alfonso IX Fernandez Leon. He had two brothers named Jean De and Louis.  He was the oldest of the three children.1 

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