He was married to , who was a younger son of Gilbert Crispin II and came to England from Armentières-sur-Avre, near Verneuil, in Normandy.
The Dives and Falaise versions of the Battle Abbey Roll claim that he fought at the Battle of Hastings with his father, but this is unlikely as he was probably still a child.
After much detailed study of the limited historical information that survives today, we are confident that there was nearly-certainly some sort of ‘kinship relationship’ between the Crispins and the ducal house – whether a direct, male-line descent from Rollo the Viking, or perhaps a link through marriage or half-blood.
Latin charters, 950 years old, show that, at the least, our earliest meticulously-proven ancestors knew William the Conquerer and his father Duke Robert of Normandy very well. However, the first Gilbert Crispin’s parents have not been identified.
It was written in a 12th century chronicle: “The earth trembled beneath them.