Ohio Rev. Code § 2307.131
If in any action it shall appear that any persons not yet born are or may become entitled to, or may upon coming into being claim to be entitled to, any future interest, legal or equitable, whether arising by way of remainder, reversion, possibility of reverter, executory devise, upon the happening of a condition subsequent, or otherwise, in any property, real or personal, involved in such suit, the court may, and upon the application of any party to the action shall, appoint some competent and disinterested person as trustee of the interest of such persons not yet born, to appear for and represent in such cause such future interest and to defend the suit for and on behalf of such persons not yet born; and any judgment or decree rendered in such suit shall be as binding and effectual for all purposes as though such persons were born and were parties to such suit. Such persons not yet born need not be served by publication.
In case the beneficiary of any such future interest is a charitable trust, not in being, service shall be made upon the attorney general who shall represent such interest.
R.C. §2307.131