• General Notes

  He married, in 1075 at Exning, Cambridgeshire, Emma, only daughter of William FitzOsbern, 1st Earl of Hereford and his first wife Alice or Adelise (or Adelissa), daughter of Roger I of Tosny. Their offspring were:
  
  William de Gael, succeeded his father as Seigneur de Gael. He claimed Breteuil after the death of his uncle William de Breteuil, but died shortly thereafter, according to Orderic Vitalis.[2][3]
  Raoul II de Gael, seigneur of Gael and Montfort. By 1119, he had obtained the honour of Breteuil in Normandy (his uncle William de Breteuil died 1103 without any legitimate issue).[2][3] The Complete Peerage claims that his descendants in the male line continued to hold his estates in Brittany, acquiring Laval and Vitré in the 15th century with the marriage of the heiress of Montmorency-Laval, but such a male-line descent hasn't been traced. He had only one child by his wife, whose name is unknown.
  Amice (Amicia) (d. c. 31 August 1168) was initially betrothed to Richard, illegitimate son of Henry I and his mistress Ansfrida, but her betrothed died on the White Ship in November 1120. She was then married to the King's ward Robert de Beaumont, 2nd Earl of Leicester, second (twin) son of Robert de Beaumont, Count of Meulan.
  Alain de Gael, who went with his parents on the First Crusade and died in the Holy Land

Details of Emma's family with Ralph de Gael (1st Earl of Norfolk)