His brother, Robert M. Iwin, born 4 November 1925, served in the U.S. Navy, Seaman 1st Class & Fireman 1st Class, # 5559529 during WWII, 1944-1946. He died 20 October 2006 in Las Vegas, Clark Co., Nevada. In 1944-1945, he served on the U.S.S. Hopkins (DMS-13). In 1946, he served on the U.S.S. O’Brien (DD-725), Fireman 1st Class.