This man is the husband of Susan's Mother. He is the father of Susan and the father-in-law of Wyatt. He is the maternal grandfather of Penny, Randall, as well as Penny And Randall's Sister. He is the ex-maternal grandfather-in-law of Zack Johnson and the current maternal grandfather-in-law of Leonard Hofstadter and Penny And Randall's Brother-in-law (Sister's Husband). He is a great-grandfather to Penny's Nephew. Penny And Randall's Cousin may be his possible grandson.