Keith Duvall Keith Duvall, 77, of Stafford, Va., died Wednesday, June 4, 2020 at Mary Washington Hospital. He retired from IBM after 30 years in Kingston, N.Y., Havant, Hantz United Kingdom and Manassas, Va. He then worked at Intuit for 15 years in Fredericksburg, Va. He is survived by his wife, Darlene Duvall, Stafford; one son, Dennis Duvall . . .