Richard Fitz Gilbert, was the eldest son of Gilbert Crispin, Count of Brionne, in Normandy.
Keats-Rohen states, [1]
Ricardus Filius Gisleberti Comitis. Norman, son of Gilbert count of Brionne, a kinsman of William the Conqueror, and brother of Baldwin de Meulles, sheriff of Exeter; lord of Orbec, Eure, arr. Lisieux, and Clare, Suffolk (Sanders, 34). He married Rohais, daughter of Walter I Giffard, and had issue by her Roger, Gilbert, Walter, Robert and Richard, a monk of Bec later abbot of Ely, Rohais, wife of Eudo Dapifer and Adelisa, wife of Walter Tirel de Poix, who was one of Richard's tenants in 1086. He had retired from the world to become a monk of Bec at the priory he had established at St Neots by April 1088, when his son Gilbert was active in the region of Rochester defending the interests of William II. He died in May 1089 or 1090 and was buried at St Neot's. See Dounglas, Dom. Mon. 40; Comp. Peer. iii, 242. R. Mortimer, 'The beginnings of the Honour of Clare', ANS 3 (1981); idem 'Land and service: the tenants of the Honour of Clare', ANS 8 (1985); J. Ward, 'Fashions in monastic endowment: the foundations of the Clare family 1066-1314', Journal of Ecclesiastical History 32 (1981); idem 'Royal service and reword: the Clare family and the Crown, 1066-1154', ANS xi (1989).
1090 Richard was buried in St. Neot's Priory, a Benedictine monastery St. Neots in the Huntingdonshire (now a district of Cambridgeshire).
[1] K. S. B. Keats-Rohan, Domesday People, A Prosopography of persons occurring in English documents, 1066-1166 (Boydell & Brewer Ltd, 1999), 363, [GoogleBooks].