Cross Family in Sycamore, Crawford, Ohio

I'm searching for my ggg-grandfather, Thornton F. Cross b. 16 Oct 1813 - 19 Jun 1947.
He marries Sarah Beavers on 19 Jul 1835 in Crawford, Ohio.
I have a copy of the marriage certificate, but that is all I have.
No birth record, no census, no death record.
His parents are Joseph Cross 1778-1850 & Nancy Comeqys 1776-1850