Jean I De Ponthieu 
Jean I was born in 1140 in Normandy, France. He died at the age of 51 in 1191 in Acre, Palestine.
He had a biological son named William.
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Children
William Ponthieu
William was born in 1179 in Ponthieu, France. He died at the age of 42 in 1221 in Ponthieu, Picardie, France.
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