On September 8, 2012. Husband of Marcia Porterfield; father of Robert (Debbie) Porterfield; grandfather of Matthew and Elizabeth Porterfield, brother of Ann McLain. A memorial Mass will be held on Friday, September 14th at 5:00pm at Holy Family Catholic Church, 12012 Woodmore Road, Mitchellville, MD. Inurnment at a later date. Contributions may be made to the William G. Porterfield Memorial Fund, P. O. Box 4125, Upper Marlboro, MD 20775.