Per his death certificate, his father was George Mumaugh and his mother was Nancy Lones
Father:George R. MUMAUGH (b. 11 APR 1868, Allen Co., OH - d. 22 JUL 1931, Colorado Springs, CO) Mother:Anna A. LONES (b. JAN 1874, OH - d. 20 JAN 1957, Akron, Summit Co., OH)