After 1196 and before 1200 William married Mabel of Chester (born c. 1173), daughter of Hugh de Kevelioc, 5th Earl of Chester, and Bertrade de Montfort. They were the parents of eight children.
Avice de Aubigny (1196–1214), the wife of William Mowbray
Maud d'Aubigny, (d.aft 1210), the wife of 1. Robert de Tateshal, 2. Gille Brigte, Earl of Strathearn
Cicely d'Aubigny married Roger de Mahaut of Elford (d.1260)
Colette d'Aubigny (d.aft 1233)
William d'Aubigny, 4th Earl of Arundel (d. 1224); buried Wymondham Abbey
Hugh d'Aubigny, 5th Earl of Arundel (d. 7 May 1243); buried Wymondham Abbey
Isabel d'Aubigny; married John Fitzalan, Lord of Oswestry
Nicole or Nichole d'Aubigny (d.abt 1240); married Roger de Somery, Baron Somery of Dudley Castle (died 26 August 1273), son of Ralph de Somery (died 1211).
Lady Mabel d'Albini(1240-1330)married Robert de Tattershall