Question: What is the name of the grandfather of one of the panelist on "Pawnography", as well as the co-owner of a Las-Vegas store?
Sentence (from "Corey Harrison"): Richard Corey "Big Hoss" Harrison (born April 27, 1983) is an American businessman and reality television personality, known as a cast member of the History TV series "Pawn Stars", which documents his work at the World Famous Gold & Silver Pawn Shop in Las Vegas, which he co-owns with his father, Rick Harrison, and grandfather, Richard Benjamin Harrison.
Relevant evidence: Yes