Jeffrey Alan Knapp was born on June 7,1961 to Raymond and Kathryn Knapp in Riceville, Iowa and passed away unexpectedly on November 18, 2024 in Oklahoma at the age of 63, following a tragic car accident. He lived much of his life in the Waterloo, Iowa & Oklahoma City, Oklahoma areas. He was previously married (& later divorced), through which he had two sons: Andrew Krieger and Matthew Krieger. He had many joys in life, including stock car racing, motorcycles, and working on cars. He was a "jack of all trades" and loved working with his hands when he could. He is survived by his mother, Kathryn Knapp (Waterloo, IA); his son, Andrew Krieger (Oklahoma City, OK); his brother, Doug Knapp (Waterloo, IA); his brother, Randy (Jeannie) Knapp (Meeker, OK); sister, Becky Graves (Stewartville, MN); and sister, Kim (Keith) Phillips (Waterloo, IA). He is also survived by many nieces & nephews. He was preceded in death by his father, Raymond Knapp, and son, Matthew Krieger.