Mary Elizabeth Sisson, 80, of Powder Springs, passed away Tuesday, September 20, 2011. Funeral services will be held at 1pm on Saturday, October 1, 2011, in the Chapel of West Cobb Funeral Home and Crematory in Marietta. Interment will follow at Kennesaw Memorial Park. Born in Atlanta, Mrs. Sisson had lived in Powder Springs since 1963. She was retired from S.P. Richards, Inc. and was of the Baptist faith. She was preceded in death by her husband, Ross Clarence Sisson, Jr. and is survived by her son, LaRoss Lenn Sisson of Powder Springs. The family will receive friends at the funeral home on Friday, September 30, 2011, from 5pm-8pm.