Relation to Reuven BlumbergIrving Isadore Jacques Friedman, the brother of Bertha Friedman Schulman, the mother of Leah Schulman Blumberg, the wife of Louis Eliel Blumberg, the son of Helman (Halman) Yaakov Blumberg, the son of Max (Mordkhel) (Mordecai) Blumberg, the son of Reuven Blumberg