Ohio Revised Code Title LVIII. Trusts § 5810.05

(A) A beneficiary may not commence a proceeding against a trustee for breach of trust more than two years after the date the beneficiary, a representative of the beneficiary, or a beneficiary surrogate is sent a report that adequately discloses the existence of a potential claim for breach of trust and informs the beneficiary, the representative of the beneficiary, or the beneficiary surrogate of the time allowed for commencing a proceeding against a trustee.

(B) A report adequately discloses the existence of a potential claim for breach of trust if it provides sufficient information so that the beneficiary or the representative of the beneficiary knows of the potential claim or should know of the existence of the potential claim.

(C) If division (A) of this section does not apply, notwithstanding section 2305.09 of the Revised Code, a judicial proceeding by a beneficiary against a trustee for breach of trust must be commenced within four years after the first of the following to occur:

(D) Nothing in Chapters 5801. to 5811. of the Revised Code limits the operation of any principle of law or equity, including the doctrines of laches, unclean hands, estoppel, and waiver, that can bar claims.