Ohio Rev. Code Ann. § 2112.26

If an application for the appointment of a guardian or issuance of a protective order is brought in this state and this state was not the respondent's home state on the date that the application was filed, in addition to complying with the notice requirements of this state, the applicant shall give notice of the application to those persons who would be entitled to notice of the application if a proceeding were brought in the respondent's home state. The notice must be given in the same manner as notice is required to be given in this state.