Question: Who is William De Beaumont, 3Rd Earl Of Warwick's paternal grandfather?
Sentence (from "Roger de Beaumont, 2nd Earl of Warwick"): Roger de Beaumont, 2nd Earl of Warwick (c. 1102 – 12 June 1153) was the elder son of Henry de Beaumont, 1st Earl of Warwick and Margaret (d. after 1156), daughter of Geoffroy, Count of Perche and Beatrix of Montdidier.
Relevant evidence: Yes