William IV D' AUBIGNY & Matilda de ST. HILARY 
They had a son named William.
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Personal Details
William IV D' AUBIGNY
William IV was born in 1134 in Arundel Castle, Sussex, England. He died in Wymondham Priory, Norfolk, England.
Matilda de ST. HILARY
Matilda de was born in 1132 in Berkenham, Norfolk, England. She died at the age of 61 on December 24th, 1193 in Norfolk, England.
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Children
William D' AUBIGNY
William was born about 1175 in Wymondham Priory, Norfolk, England. He died in Cainell by Roma, Latium (Italy) ( On a crusade).