Question: Who is Roger De Newburgh's paternal grandfather?
Sentence (from "Robert de Neubourg"): He was the fourth son of Henry de Beaumont, 1st Earl of Warwick, and inherited his father's Normandy lands, holding Neubourg from Waleran de Beaumont, 1st Earl of Worcester, a Beaumont family cousin, as Comte de Meulan.
Relevant evidence: Yes