Ohio Revised Code|Section 2123.02 | Petition - defendants.

                                                
In a situation described in section 2123.01 of  the Revised Code, the executor or administrator may file in the  probate court of the county where the estate is being administered  a complaint signed by the executor or administrator or the  executor's or administrator's attorney, which complaint shall be  verified. The surviving spouse and the legatees and devisees, or  the heirs and distributees of the decedent, including those whose  names are unknown, shall be made parties defendant. The complaint  shall contain a concise statement of the pertinent facts and shall  conclude with a prayer, for the determination of the heirs and  distributees of the decedent or of the devisees or legatees not  named in the will and their respective interests in the estate.