Question: Hélio Gracie A patriarch of the Gracie family, he was the father of a UFC Hall of Famer considered by UFC fans to be the most influential figure in the history of what?
Sentence (from "Hélio Gracie"): A patriarch of the Gracie family, he was the father of Rickson, Royler, Royce, Relson, and Ultimate Fighting Championship (UFC) co-founder Rorion Gracie, among other sons and daughters.
Relevant evidence: Yes