Question: Who is the paternal grandfather of William Somerset, 3Rd Earl Of Worcester?
Sentence (from "William d'Aubigny, 4th Earl of Arundel"): William d' Aubigny, 4th Earl of Arundel, also known as William de Albini V( b. 1203 – before 7 August 1224) was the eldest son of William d'Aubigny, 3rd Earl of Arundel and Mabel of Chester( born c. 1173), daughter of Hugh de Kevelioc, 3rd Earl of Chester and Bertrade de Montfort of Évreux.
Relevant evidence: No