The two mixed-blood Cheyennes, George Bent and Edmund Guerrier, also returned to the southern plains. Bent became an interpreter between the Cheyenne and the whites and, through a series of letters to scholar George Hyde, a historian of the Colorado War and the Cheyenne. Guerrier worked for a time as a scout for George Armstrong Custer in campaigns against his Cheyenne relatives and as an interpreter for many interactions between the tribe and the United States. Guerrier married Julia Bent, sister of George Bent and also a survivor of the Sand Creek massacre.