Ohio Rev. Code Ann. § 2107.24
(A) If a document that is executed that purports to be a will is not executed in compliance with the requirements of section 2107.03 of the Revised Code, that document shall be treated as if it had been executed as a will in compliance with the requirements of that section if a probate court, after holding a hearing, finds that the proponent of the document as a purported will has established, by clear and convincing evidence, all of the following: