Ohio Rev. Code § 2107.21: Recorded in each county where real property is situated.

If real property devised by will is situated in any county other than that in which the will is proved, declared valid, or admitted to probate, an authenticated copy of the will and the order of probate or the judgment declaring validity shall be admitted to the record in the office of the probate judge of each county in which the real property is situated upon the order of that judge. The authenticated copy shall have the same validity in the county in which the real property is situated as if probate had been had in that county.