I wonder if you might be able to tell me a bit more about this. I recently traced this line down to a Frank St. Clair Tennille, Jr., who I think is the Frank Tennille in your post. It looks like Frank Tennille, Jr. and his older sister Edith were the children of Frank St. Clair Tennille Sr. and his wife Edith Martin. I have this Edith Martin as the daughter of Albert C. and Charlotte E. (McKee) Martin. The 1900 census has this family in Findlay, Hancock Co., Ohio. I am pretty sure (i.e. attempting to confirm) that Charlotte McKee was the daughter of William McKee and Martha Ann Fisher, who in the 1860, 1870 and 1880 census are in Beaver, Venango and Butler Counties in Pennsylvania, respectively; William McKee having died prior to the 1880 census.