Using FamilySearch.org, I got 915 marriages in Ohio for an OBNEY partner. I suggest you narrow your timeframe to get more useful results.
Here is the earliest on the first page of results where the male was the OBNEY:
"Ohio Marriages, 1800-1958," database, FamilySearch(https://familysearch.org/ark:/61903/1:1:XDFX-G6D : 8 December 2014), Alexander Obney and Anna Sheffer, 20 Feb 1855; citing Columbiana,Ohio, reference ; FHL microfilm 0927767 V. 4-5.
Happy hunting. -NGP