Hugh de Calvacamp; b most likely c890; of French rather than Norman extraction; had, with another elder son (Hugh, b probably by 915, monk at Abbey of St Denis, France, Archbishop Rouen, Normandy, 942, had issue (probably illegitimate), made over that part of the archiepiscopal lands consisting of the feudal territory of Toeni (modern Tosny, on the Seine southeast of Rouen) to his brother Ralph and died 10 Nov 989 or 990). [Burke's Peerage]
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Hugh de Calvacamp, a Frenchman, was b. probably about 890. Nothing is know of him except that he was the father of two sons, whose names follow. [Complete Peerage XII/1:753]