Annulment

Under Ohio law, a marriage may be annulled for any of the following reasons that existed at the time of the marriage:

1. That the party in whose behalf it is sought to have the marriage annulled was under the age at which persons may be joined in marriage.

2. That the former husband or wife of either party was living and the marriage with such former husband or wife was then and still is in force.

3. That either party has been adjudicated to be mentally incompetent, unless such party after being restored to competency cohabited with the other as husband or wife.

4. That the consent of either party was obtained by fraud, unless such party afterwards, with full knowledge of the facts constituting the fraud, cohabited with the other as husband or wife.

5. That the consent to the marriage of either party was obtained by force, unless such party afterwards cohabited with the other as husband or wife.

6. That the marriage between the parties was never consummated although otherwise valid.
    

*dervived from Ohio Revised Code