William I de Ponthieu
William I was born before 0930. He died in 0965.
William I's family with Maud St. Pol Sur Mer de Therouanne
They had two sons named
Ernicule of
and
Hildouin
.
Children
Ernicule of Boulogne
Ernicule of was born before 0945. He died in 0972.
Hildouin de Ponthieu
Hildouin was born before 0965. He died about 0981.
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William I de Ponthieu 