John De Cotentin
John was born in 1042 in Normandy, France.¹   He died at the age of 63 in 1105 in Normandy, France.¹ 

 Marie De Normandy
Marie was born in 1045 in Falaise, Calvados, Normandie, France.¹ 

 William De Cotentin
William was born in 1068 in Cotentin, Manche, France.¹   He died at the age of 68 in 1136.¹