deDecker was born in Appleton, WI. Before attending college, de Decker was primarily interested in archaeology and anthropology but was inspired by a student art show at Brigham Young University, Provo, Utah, where he was enrolled. After college, he traveled throughout the West and then settled in Washington State because of his interest in the Plains tribes. A traditional painter of the peaceful lifestyle of the western Indian before 1880. A successful artist, de Decker has won numerous state and national awards and has exhibited extensively across the United States.