There are several Ohio background check resources you can use because this is an open record state, meaning that many personal records are available to anyone who requests them. You can see if someone has been married or divorced in the past by getting copies of the relevant certificates from the Ohio Department of Health.
Accessing Criminal Histories
Another avenue for getting into someone's past is the Bureau of Criminal Investigation but their services are not really open to the general public Criminal background checks are only performed for employers in certain industries who need to screen applicants. But you may have some luck in this area if you contact the Ohio Supreme Court Cases Search website instead. You can do a free search based on someone's name to see if they are involved in any legal proceedings. It is definitely a very useful Ohio background check resource.