Ohio Rev. Code Ann. § 5905.06

No person other than a bank or trust company shall be guardian of more than five wards at one time, unless all the wards are members of one family. Upon presentation of a petition by an attorney of the veterans' administration or other interested person alleging that a guardian is acting in a fiduciary capacity for more than five wards and requesting his discharge for that reason, the probate court, upon proof substantiating the petition, shall require a final accounting forthwith from such guardian and shall discharge him from guardianship in excess of five and forthwith appoint a successor.