Jackson Sundown, born in 1863, was a member of the Wallowa Band Nez Perce and a nephew of Chief Joseph. At age forty, he began competing in rodeos and first took the name Buffalo Jackson, later changing it to Jackson Sundown. In 1911 he lost in the Pendleton Round-Up finals for the World Championship Bronc Riding event against John Spain and George Fletcher, but he returned many times, and in 1916, at age 53, he won the World Championship Bronc Riding competition and was also awarded the All-Around Cowboy title of the 1916 Round-Up. He received a $500 Hamley's saddle, which he engraved with his wife's name. Sundown was also the favorite Native American model for sculptor A. Phimister Proctor, who spent many months living with Jackson and his family; among the works for which Proctor used him as a model, the best known is Indian Pursuing Buffalo at the Smithsonian, and Proctor also sculpted the Ti Taylor statue in Pendleton. Sundown retired to his home in Idaho in 1917 and worked as a ranch hand and horse trainer for the rest of his life. He died on December 18, 1932. His gravestone says that he rode with Chief Joseph at age 14 in 1877, performed in many rodeos in the Northwest and Canada, and in 1916 won the World's Bucking Horse Championship at the Pendleton Round-Up amid an ovation never before equaled.