John I d' Avesnes , Count of Holland & Adelaide of Holland 
They had a son named John II d'.
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Personal Details
John I d' Avesnes , Count of Holland
John I d' was born about 1215 in Oizy, Namur, Belgium. He died in 1256 in Holland.
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Children
John II d' Avesnes , Count of Hainault
John II d' was born about 1250 in Hainault, Flanders, Beglium. He died in 1304.
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