Question: Who is Ermesinda Of Bigorre's paternal grandfather?
Sentence (from "Ermesinda of Bigorre"): (Aragonese: "Ermisenda de Bigorra"), born Gerberga or Gisberga (1015 – 1 December 1049), was a Queen of Aragon, a daughter of Bernard-Roger, Count of Bigorre and his wife Garsenda, Heiress of Bigorre.
Relevant evidence: Yes