I have not seen any record that shows him with both the names Samuel and Savel. All three of his marriage records have his name as Samuel, at least according to the published transcriptions. But the 1850 and 1860 censuses record his name as Savel, and the death certificate of his daughter Nancy (for which the informant was L. P. Gearhart) lists Nancy’s father as “Save Hardin”. It is quite possible that the marriage records have been misread.