William Twyman Marshall, Jr., 79 years old of Cecil, died Tuesday, October 19, 2021 in his home.

He was born February 14, 1942 in Jacksonville, FL, Son of the late William Twyman and Nell Silvernail Marshall, Sr.

He worked as a Software Engineer for Westinghouse, designing nuclear simulation software.

Surviving are his wife, Nancy Marshall of Cecil, son, Mike (Brenda) Marshall of Albuquerque, NM, daughter, Laura Marshall of Zion, Ill, three grandchildren, Joshua, Madison, and Andrew, and two great grandchildren, Jaden and Jada.

He enjoyed golfing, reading and travel..

Services will be private and entrusted to the Coleman-Taylor Funeral Services 3378 Miller Run Road, Cecil, PA.

The family suggests donations in memory of William to: the Western Pennsylvania Conservancy 800 Waterfront Drive, Pittsburgh, PA 15222 or at