Ohio Rev. Code § 2121.09
After vacation of the decree of the presumption of death has been established, as provided by section 2121.08 of the Revised Code, the person erroneously presumed to be dead, on motion filed of record stating the facts, may be substituted as plaintiff or petitioner in all actions or proceedings brought by the executor or administrator, whether prosecuted to judgment or decree or otherwise. That person, in all actions or proceedings previously brought against the executor or administrator, may be substituted as defendant or respondent, on motion filed by the person or on the person's behalf, but shall not be compelled to go to trial in less than three months from the time of filing of the motion. Judgments or decrees recovered against the executor or administrator, before the vacation of the decree, may be opened on application made by the person erroneously presumed to be dead within three months after the vacating of the decree, provided it is supported by an affidavit alleging the existence of facts that would be a valid defense. If the application is not made within the three months or is made but the supporting alleged facts are adjudged an insufficient defense, the judgment or decree is conclusive to all intents, saving the defendant's right to review as in other cases on appeal.
R.C. § 2121.09