Denig entered into several "country marriages" with Native American women. His first marriage was to Sina Wamniomi (Whirlwind Blanket), a Lakota, with whom he had a son, Robert, and a daughter, Sarah. His second marriage, in 1837, was with Hai-kees-kak-wee-yah (Deer Little Woman), an Assiniboine, with whom he had one son, Alexander, and two daughters, Ida and Adeline. The first wife stayed at Fort Pierre, but the son was with his father and the second wife at Fort Union. Denig also married the second wife's younger sister in a polygamous union, that eventually ended when the younger sister moved away. The marriage with the second wife was formalized in 1855 through a
Catholic ceremony in
St. Louis. In 1856 he moved with her and their three children to
Selkirk Settlement, where the children were placed in Catholic schools. Denig was here active as an independent fur trader, but died of appendicitis in 1858. ==References==