Tina, James Mahaffy (we spell without the "e") was married to Ola Micue (no "s"). They are my 2nd great grandparents. My great grandfather was John Wesley Mahaffy. He was the second child/second son. They did have 17 children, 6 boys and 11 girls. However, Jennie Mahaffy was James' sister not a daughter. My grandmother says she remembers an Aunt Jennie; she believes Jennie married a Drost.
The boys were the following: Gordan, John Wesley, James Alfred, Gideon, Charles M. and Carroll O. Uncle Carroll is the only living child - he is 4 years younger than my grandmother. The girls were the following: Eva, Nora A., Estella G., Tressie, Bertha Victoria, Alma Desire, Sylvia B.,Violet Ruth, Arline, Ester and Elvira.
James also had 2 other sisters and brother from what my grandmother remembers. Evelyn (who married a Mesrescroy), Augusta (who married a Buckingham) and Stephen Edward (who married Flora Abbott). Their parents were William Mahaffy and Ann Hartsgrove. This information is very limited as I haven't been able to verify it; it is only from my grandmother's memory.
I have more information but too much too include right now. If you would like more information, please email me directly. firstname.lastname@example.org