William De Tancerville
William was born about 1054 in Tacerville, Cotes-du-Nord, Normandy, France.  He died before 1128.

 Matilda De Arques
Matilda was born about 1057 in Arques-la-Bataille, Seine-Inferieure, Normandy, France.

 Renebault De Tancerville
Renebault was born about 1070 in Tacerville, Cotes-du-Nord, France.  He died about 1140.

 Lucy De Tancerville
Lucy was born about 1090.