Vivian Maddock Stewart, age 91, of Mars, formerly of Richland Twp., on Thursday, February 22, 2018. Wife of the late Clark M. Stewart, mother of Clark Stewart, Jr. (Shirley) and the late Sarah Ann “Sally” Stewart, grandmother of Angie Smith, Clark III., and Tracy Gengler, great grandmother of Kayla and Emily, sister-in-law of Sam and Anne Stewart. Arrangements are private under the direction of the McDonald-Aeberli Funeral Home, Inc. 238 Crowe Ave. Mars, PA and condolences are available at www.mcdonald-aeberli.com. Memorials may be made to Victims of Violent Crime, 5916 Penn Ave. Pgh., PA 15206, in memory of her daughter, Sally.