If he was 61, he was born in 1839. Married circa 1860. If he was marrried in Illinois, they have marriage records. In what county is Mount Olive? If it is in Montgomery, that is a difficult County to search, believe me. I ran the marriage records for Frank Finley. I will go back and see if there is a John married circa 1860. What was his wife's name? Rev. Everts