No person under eighteen years of age shall witness a will executed pursuant to section 2107.03 of the Revised Code or an agreement to make a will or to make a devise or bequest by will pursuant to section 2107.04 of the Revised Code.
Age requirement for witnessing will
Ohio Rev. Code Ann. § 2107.06, under Chapter 2107 | Wills.
Ohio Rev. Code Ann. § 2107.06