Lawbaugh (Laubaugh, Labach)

I am trying to find documentation that William Lawbaugh, b. Oct. 10, 1823 in Tuscarawas Co., Ohio is the son of John J. Laubach (Lawbaugh), b. July 8, 1799 in Columbia PA.  This John J. was the son of Lewis Laubach and Mary Ann Clinger. They are both buried in the family plot in Geneseo, IL.  So far I have not found birth, death, or church records linking them as father and son.  William married Lydia Ummel in Nov. 1849 so was out the the family home of John J. and Margaret Schaub for the 1850 census. I seem to be against the wall and could use any help one might be kind enough to give.

 Thank You,

Linda Gray