The Probate Court is established in each county of Ohio to supervise the administration of the estate of a decedent who was a legal resident in the county at the time of his or her death. Each transaction involved in the administration of an estate is subject to the examination and approval of the Probate Court. Other matters within the Probate Court's jurisdiction are: issuance of marriage licenses, adoptions, guardianship proceedings, the involuntary commitment of the mentally ill, and land appropriation cases.