Margaret de Mortagne (of Perche)
daughter of Geoffrey II of Perche and Beatrix of Montdidier
dau of Geoffroy, Count de Mortagne et du Perche
4 other children
2.Robert de Neubourg (d.1159), who inherited Henry's Norman lands and was Steward of Normandy.
3.Rotrou (died 27 November 1183), who was Bishop of Évreux subsequently Archbishop of Rouen, and Chief Justiciar and Steward of Normandy.
4.Geoffrey de Neubourg. He moved to England at the end of 1137 and resided thereafter with his eldest brother Earl Roger of Warwick. He made a number of appearances in Earl Roger's charters as "Geoffrey the earl's brother." When Roger died in 1153 and was succeeded by his son, Earl William, "Geoffrey the earl's uncle" continued to live in the Warwick household. He appears as a ducal justice in Normandy in his later years. See Haskins Society Journal 13 (2004): 50.
5.Henry de Neubourg, otherwise known as "Henry of Gower", who re-conquered the family's Welsh estates in around 1136, holding the lordship of Gower throughout the reign of King Stephen.