MILTON - William F. Knapp passed away peacefully on Saturday, Feb. 4, 2017 at the Delaware Hospice Center in Milford. William entered this world in a set of triplets born to, George E. and Lelia M. (Fowler) Knapp. He was a retired Senior Systems Analyst for the US Government Drug Enforcement Administration. After retiring, he and his wife, Joan, moved to Milton where he was very active in the Milton Lions Club. He enjoyed collecting sports cards and stamps. William served along with his brother Lester, in the US Navy aboard an LST. He was honorably discharged in 1958 after three years' service. In addition to his parents, William is preceded in death by a son, Douglas Knapp; his identical twin brother, Lester Knapp; and their sister, Lelia Magill. He is survived by his wife of 58 years, Joan (Howell) Knapp; a daughter, Denise Knapp; and numerous nieces, nephews and extended family. A memorial service will be held Saturday, Feb. 18, 2017, at 12 noon in the chapel of Short Funeral Services, 416 Federal St., Milton, with visitation after 11 a.m. In lieu of flowers, contributions in Williams's memory can be made to, Tunnell Cancer Center, 18947 John J. Williams Hwy., Rehoboth Beach, DE 19971, Milton Lions Club, PO Box 256, Milton, DE 19968 or Delaware Hospice Center, 100 Patriots Way, Milford, DE 19963.