Ralph de TANKERVILLE 
Ralph de was born about 1034 in Tancarville, Le Havre, Seine-Infereiure, Normandy, France. Ralph de's father was Gerald de TANKERVILLE and his mother was Helesinde UNKNOWN. His paternal grandfather was Ralph Fitzherlewin de TANCARVILLE. He was an only child.
They had a son named William Seigneur de.
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Children
William Seigneur de TANKERVILLE
William Seigneur de was born about 1062 in Tancarville, Le Havre, Seine_Infereiure, Normandy, France. He died in 1129.