I don't think there's a big discrepancy in the names. My database has Benjamin Franklin Gallahan married to Mary (Mollie) Horton/Horten, with the following children. One of my references is the 1900 Census for Prince William County, Virginia.
Benjamin F. age 42
Mary, wife, 39
Pearl, son. 17
Madin, dtr., 6
There was also a dtr who was born in 1895, but she is not listed in their household for 1900. Now, as for the name Frank - I'd bet it's the same Benjamin Franklin - or FRANK!
My father's (Wilman Pitmon Keys) first wife was Nellie E. Gallahan, b. 4 Mar, 1885, d. 4 Aug 1926, of Tuberculosis. She and my father had four children, only one of whom lived to adulthood. That was my half-sister, Myrtle Estelle Keys.
Where do you live?
Thanks for your reply. gentsia keys zimmerman