Mary L. Derrah, age 75 of Beacon Falls, Connecticut, she entered into peaceful rest on July 13, 2021 at the Waterbury Hospital, Waterbury, CT. Mary was born October 15, 1945 in Bridgeport, daughter of the late Robert and Vivian (Schlaflin) Donaldson. Mary is survived by her brother, Eugene Donaldson of Hoover, AL, and her sister, Claire Lambert of San Marcos, CA, as well asa niece and a nephew. Mary was a Bookkeeper having worked in health care for many years. Mary had a love of cats. All services are private. The Ralph E. Hull Funeral Home, 161 West Church Street, Seymour is entrusted with the arrangements. Please share a memory at www.hullfh.com