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Male Jean I De Ponthieu Click to view Jean I De Ponthieu in the family tree

Jean I was born in Montreuil, Pas-de-Calais, France.  Jean I's father was Guy II De Ponthieu and his mother was Ida de St. Pol.  His paternal grandparents were Guillaume III de Alencon and Alice.  He was an only child.  He died on June 30th, 1191 in Acre, Palestine.


Jean I's first family with Matilda de Maine

‌Jean I and Matilda were married in a religious ceremony before 1162.  They had two daughters named Marguerite and Adela.


Jean I's second family with Beatrice De Saint Pol

‌Jean I and Beatrice De were married in a religious ceremony before 1177.  They had a son named William III.

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