William de ST. JOHN or ST. JEAN & Olivia de FOUGERES 
They had a son named John.
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Personal Details
William de ST. JOHN or ST. JEAN
William de was born about 1019 in St. Jeanle Thomas, Manche, Normandy, France. He died about 1066 in Hastings, England.
Olivia de FOUGERES
Olivia de was born about 1050 in Fougeres, Brittany, France. Olivia de is no longer alive.
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Children
John ST. JOHN
John was born before 1066 in Staunton-St-John. Oxfordshire, England. He died in Falmont Castle, England.