Guillaume Ier De Ponthieu
He had a biological son named
Hildouin III
.
Personal Details
Guillaume Ier De Ponthieu
Guillaume Ier was born in 0920. He died at the age of 60 in 0980.
Children
Hildouin III De Ponthieu
Hildouin III was born in 0945. He died at the age of 64 in 1009.
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Guillaume Ier De Ponthieu 
