I believe it is possible that this is Henry Mummaw who is found in Northumberland County. If so, the then two brothers, Henry Mummaw and Aaron Mummah probably went together.
The 1870 census lists both a Henry Muma, age 17 and a Harrison Muma, age 16. One can speculate that Harrison and Henry are one in the same person.
1. Elizabeth MUMMA (b. 11 FEB 1845, PA - d. BEF 1860, PA)
2. Emmelia MUMMA (b. 24 OCT 1847, PA)
3. Levi S. MUMMAW (b. 1 FEB 1850, Lebanon Co., PA - d. 1914, Berrien Co., MI)
4. John Henry MUMMAW (b. 17 NOV 1852, Lebanon Co., PA - d. 13 MAY 1922, Northumberland Co., PA)
5. William MUMMA (b. 5 APR 1854, PA)
6. Aaron MUMMA (b. 21 JUL 1859, PA - d. 29 JUL 1911, Mt. Carmel, Northumberland Co., PA)
7. Elijah MUMMA (b. 28 FEB 1864, PA)