Age 66, of Pittsburgh, on Saturday, March 28, 2015. He is the beloved husband of Terry O'Grady; father of Megan (Matt) Siconolfi, step-father of the late Chuck Mayer; devoted grandfather of Matteo; brother of Jean Monks and Kathy Flinn; also survived by members of the Holleran, Flinn, McGrath, and Prince families. Daniel is a proud US Marine veteran of the Vietnam war. Family and friends received on TUESDAY from 2-8 PM at McDERMOTT FUNERAL HOME, INC., 1225 Chartiers Ave., McKees Rocks, where prayers will be offered WEDNESDAY at 9:50 AM. Burial will follow in the National Cemetery of the Alleghenies.