Roger de Beaumont; Seigneur (feudal Lord) of Beaumont, Pontaudemer, Brionne and Vatteville, Normandy; married Adeline, sister of Hugh Count of Meulan and daughter by his 1st wife of Waleran Count of Meulan. [Burke's Peerage]
---------------------------------------
The well-known Roger de Beaumont held Sturminster Marshal, Dorset, in 1086; it descended to the counts of Meulan through Roger's eldest son, Robert count of Meulan. That Roger took his name from Beaumont is a part of the general history of Normandy. It follows that Roger's descendants, the counts of Meulan, the Earls of Leicester, and the Earls of Warwick, all derive from Beaumont-le-Roger. [The Origins of Some Anglo-Norman Families]