Guillaume I De+ Tancarville
Guillaume I De+ was born about 1060 in Normandy, France.  He died in 1087 in Normandy, France.

 Mahaut+ Giffard
Mahaut+ was born about 1066 in Kent, England.

 Rabel De+ Tancarville
Rabel De+ was born before 1087 in Tancarville, Le Havre, Seine-Inferieure, Normandy, France.  Rabel De+ is no longer alive.

 Lucy De+ Tancarville
Lucy De+ was born before 1088 in Kenilworth Castle, Warwickshire, England.