Divorces are usually filed in the Court of Common Pleas in Ohio in the county where the defendant resides. Hamilton County Courts has a web page that lets you search the records. I don't know how far back the records go, but here it is. http://www.courtclerk.org/cp_civ_name.htm This link is for the first page of Hamilton County Courts in case the above link does not work. http://www.courtclerk.org/ Good luck.