Bampy's father is the father of Bampy Botsford and his brother and sister. He may be the husband of Bampy's mother (who is also the mother of Bampy's brother and sister) and would be the paternal grandfather of Tim Botsford. He is depicted in Becky's family tree in "The Ordinary, Extraordinary Botsfords".
Great Great Grandpa Botsford and Great Great Grandma Botsford are also depicted at the uppermost level of the tree.