Nancy Ellen (Waldeck) Sontag, 84, of Shannondell of Valley Forge in Audubon, passed away on Monday, April 13, 2015. She was the beloved wife of Donald Sontag, Sr. and daughter of the late Peter Conrad and Nan (Hughes) Waldeck. Mrs. Sontag was a graduate of the University of Pennsylvania. In addition to her husband, she is survived by her sons Donald Sontag, Jr., husband of Mi-Yung, of Downingtown, and Peter Sontag, husband of Christine, of Massachusetts; two grandchildren; and one cousin Barbara Ritchie. A Memorial Service will be held on Saturday, April 25, 2015 at 11 AM at St. Alban's Episcopal Church, 3625 Chapel Rd, Newtown Square, PA 19073. Interment will be private in Arlington National Cemetery. In lieu of flowers, contributions are requested to the American Cancer Society, P.O. Box 22718, Oklahoma City, OK 73123-1718. Arrangements are by The Oliver H. Bair Funeral Home. (610) 449-8585