Ohio Rev. Code Ann. § 2112.21
(A) A probate court of this state has jurisdiction to appoint a guardian or issue a protective order for a respondent if any of the following applies:
(2) On the date that the application is filed, this state is a significant-connection state, and either of the following applies:
(b) The respondent has a home state, a petition for an appointment or order is not pending in a court of that state or another significant-connection state, and before the probate court makes the appointment or issues the order all of the following apply:
(B) In determining whether a respondent has a significant connection with a particular state for purposes of this section, the probate court may consider any of the following: