Relation to Isaac (Ivan) Louis "Ike" EpsteinElla Polishook Katz, the mother of Robert Ellis Katz, the father of Ellis Robert Katz, the husband of Marjorie Ruth Blumberg Katz, the daughter of Louis Eliel Blumberg, the brother of Alice Blumberg Epstein, the wife of Isaac (Ivan) Louis "Ike" Epstein