Question: Who is Mendo Nunes's paternal grandfather?
Sentence (from "Nuno Alvites"): Nuno Alvites, also referred to as Nuno or Nuño Aloitiz ("fl." 10171028), was a count of Portugal, a descendant of the first count, Vímara Peres as the son of Count Alvito Nunes and Gontina.
Relevant evidence: Yes