The Assiniboin are a Siouan-speaking people who historically represented the most northerly of the Yanktonai Sioux in their original homeland north of Lake Superior. They were traditionally allied with the Cree against their common enemy, the Blackfeet. By the 1700s the Assiniboin had crossed into the present-day United States, where they established a territory in the northeastern corner of Montana where the state meets North Dakota. The 2,000-member tribe is today divided onto two reservations, Fort Belknap and Fort Peck.
© W.C. McRae & Judy Jewell from Moon Montana, 7th Edition