On this date in 1936, the Bismarck Tribune reported the passing of William Zahn at Fort Yates. Zahn was a colorful character in North Dakota history, a Native trader, interpreter, and former Army scout who accompanied Custer's expedition to the Black Hills in 1874. After returning, he quit the Army to marry Pretty Woman, sister of Chief John Grass. They had three sons. Pretty Woman died in 1886.