Margaret, daughter of Robert, 2nd Earl of Leicester of the post-Conquest creation made in favour of Robert's father Robert de Beaumont. [Burke's Peerage]
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He [Ralph de Toeni] married Margaret, daughter of Robert, 2nd EARL OF LEICESTER, by Amice, daughter of Ralph, SEIGNEUR OF GAEL AND MONTFORT in Brittany. He died in 1162. His widow had Walthamstow, Essex, in dower; and also held land at Pont-St.-Pierre and other places in Normandy. In 1185 she was said to be 60 years of age. [Complete Peerage XII/1:764-5, (transcribed by Dave Utzinger)]