Data source is the 1971 self published book by Richard Glenn Huffman [deceased], "George Muma Genealogy".
Father:Robert IRWIN (b. 20 JUN 1810 - d. 20 FEB 1880) Mother:Barbara MUMAW (b. 25 MAR 1814, PA - d. 14 AUG 1876)
Siblings:
1. John IRWIN (b. 1 JAN 1835 - d. 27 MAY 1912)
2. Andrew IRWIN (b. 7 AUG 1836, Holmes Co., OH - d. 13 SEP 1921)
3. Samuel IRWIN (b. 23 SEP 1842 - d. 18 NOV 1915)
4. Mary IRWIN (b. 24 FEB 1847 - d. 11 JAN 1918)
5. George IRWIN (b. 12 JUN 1850 - d. 23 DEC 1912)
6. William Henry IRWIN (b. 11 NOV 1853 - d. 24 MAR 1932)