Ohio Revised Code Title XXI. Courts Probate Juvenile § 2107.22

(A)(1)(a) When a will has been admitted to probate by a probate court and another will of later date is presented to the same court for probate, notice of the will of later date shall be given to those persons required to be notified under section 2107.19 of the Revised Code, and to the fiduciaries and beneficiaries under the will of earlier date. The probate court may admit the will of later date to probate the same as if no earlier will had been so admitted if it appears from the face of the will of later date, or if an interested person makes a demand as described in division (A)(1)(b) of this section and it appears from the testimony of the witnesses to the will given in accordance with that division, that the execution of the will complies with the law in force at the time of the execution of the will in the jurisdiction in which the testator was physically present when it was executed, with the law in force in this state at the time of the death of the testator, or with the law in force in the jurisdiction in which the testator was domiciled at the time of the testator's death.

(b) Upon the demand of a person interested in having a will of later date admitted to probate, the probate court shall cause at least two of the witnesses to the will of later date, and any other witnesses that the interested person desires to have appear, to come before the probate court and provide testimony. If the interested person so requests, the probate court shall issue a subpoena to compel the presence of any such witness before the probate court to provide testimony.

Witnesses before the probate court pursuant to this division shall be examined, and may be cross-examined, in open court, and their testimony shall be reduced to writing and then filed in the records of the probate court pertaining to the testator's estate.