He was born Sept. 21, 1938, in Jonesboro, Ill., son of Arlie and Gladys Dollman Knupp.
He served in the U.S. Army from 1961 to 1963. He was a member and past exalted ruler of Macomb Elks. Knupp managed several Leath Furniture Stores and was also manager at Ayerco Station in Macomb.
Survivors include two sons, Robert and Paul Knupp of East Dubuque, Ill.; a daughter, Elizabeth Knupp of Macomb; three brothers, Robert Knupp of McClure, Ill., Paul Knupp of St. Louis, Jerry Knupp of Alabama; two sisters, Margaret Stark of Illinois, Mary Wilson of Cape Girardeau; and six grandchildren.
Visitation will be from noon to service time Monday at Dodsworth-Piper-Wallen Funeral Home in Macomb.
The funeral will be at 2 p.m. Monday at the funeral home, with the Rev. Victor Randle officiating. Burial will be in Forest Lawn Memory Gardens.