In the 1880 Census listing in Danville, Boyle, KY there is a listing of a Deaf school with George F. Lupton and his wife Loola as head. Living there is Francis Pennington, a student, 13yrs. old born in KY.
He would have been b. about 1866, which would put him at 34 in 1900.
May not be your grandfather, but wanted to tell you.