Mary A. Piotrowski, of Warren, passed away Thursday, November 21, 2013 at the age of 90. She was born June 29, 1923. Mother of Sal (Nelda) Sposaro, Cecelia Howey, Charles (Barb) Piotrowski, Diane (Martin) Potter, Rosalie (Bob) Darby, Patricia... View Obituary & Service Information