If the happening of an event, including marriage, divorce, performance of educational requirements, or death, affects the administration or distribution of a trust, a trustee who has exercised reasonable care to ascertain the happening of the event is not liable for a loss resulting from the trustee's lack of knowledge.
Reasonable care to ascertain material event
Ohio Rev. Code Ann. § 5810.07, under Chapter 5810 | Breach Of Trust.
Ohio Rev. Code Ann. § 5810.07