(Born 1946-2013) Apache/ Shoshone American Indian) A member of the San Carlos tribe, Kniffin was a painter who studied at the Institute of American Indian Arts in Santa Fe, New Mexico and specifically with Allan Houser, Charles Loloma and Fritz Scholder.
Kniffin won first place, a special award and two honorable mentions for his pen and ink drawings at the annual Scottsdale National in 1976. He also won first prize and honorable mention at the Heard Annual Art Show in Phoenix (1976). Kniffin was represented in Phoenix, Arizona by Gallery Three.
He had been cited in Who's Who in American Art.