Question: Who is the paternal grandfather of Peter Ii Of Sicily?
Sentence (from "Peter II of Sicily"): Giovanni Villani, in his "Nuova Cronica", calls him "almost an imbecile" (Italianate Latin: "quasi un mentacatto") and Nicola Speciale, in his "Historia Sicula", calls him "pure and simplepurus et simplex").
Relevant evidence: No