Mark E. Wills, 62, of Greensburg, died Thursday, December 21, 2017. He was born February 21, 1955, in Altoona, a son of Hilda Holtz Wills, of Altoona, and the late Eugene Wills. He was a member of the Greensburg Alliance Church. Mark graduated from Point Park University and worked for 36 years as a nuclear engineer for Westinghouse. He was a member of the Youngwood Sportsmen’s Association, was an avid hunter and fisherman, and was a general “tinkerer”. In addition to his mother, he is survived by his wife, Kathleen A. Elder Wills; two sons: Aaron J. Wills, of Cranberry Twp., and Jordan (Tara) Wills, of Greensburg; a daughter, Haley Wills, of Greensburg; a brother, Eric R. Wills, of Altoona; three sisters: Susan Schroeder, Deborah Johnston, and Celeste Crossman, all of Altoona; and a number of nieces and nephews. Family and friends will be received from 11 a.m. to 1 p.m. Wednesday at BARNHART FUNERAL HOME, 505 E. Pittsburgh St., Greensburg. A funeral service will be held at 1 p.m. Wednesday in the funeral home. Interment will follow in St. Clair Cemetery, Greensburg. For online condolences, visit BarnhartFuneralHome.com.