Guerric I d' Avesnes 
He had a biological son named Guerric II d'.
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Children
Guerric II d' Avesnes
Guerric II d' was born in 1015 in Avesnes,Pas-de-Calais,France. Guerric II d' is no longer alive.
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Guerric I d' Avesnes Guerric II d' Avesnes