Mary Ann C. Walker, 69, of Canton Township, Washington, passed away on Friday, May 11, 2018, in her home. She was surrounded by her loving husband, Del, daughter, Nicole, and her dear, loving Golden Retriever puppy, Reba. She was born on July 16, 1948, in Pittsburgh, a daughter of Mary Laird, of Florida, and the late Stanley Stibber. Mary Ann graduated from Bellevue High School, in Pittsburgh. Mrs. Walker enjoyed casino card playing and bingo, and, with her husband, was very active in Canton Township, particularly in relation to the Township Planning Commission. On July 7, 2007, she married Del Walker, who survives. Also surviving are her son, Anthony Corso, of Pittsburgh; two daughters, Angela Waxler and Nicole Corso; a granddaughter, Aurora Waxler; a sister, Diane Karschnick, of Florida; a stepson, Michael (Michelle) Corso; and her loving father and mother-in-law, Robert and Catherine Walker. Deceased are a brother, Tommy Stibber, a stepdaughter, Melissa Corso, and an aunt, Mary Gillespie. Mary Ann will be missed by many friends and good people. A Memorial Service will be held on Saturday, May 26, 2018, at 1:00 p.m., in the East Buffalo Presbyterian Church, 180 East Buffalo Church Rd., Washington, PA. It is our hope that all friends and family will attend to honor Mary Ann’s life.