Brulé Sioux born in Sheridan County, Nebraska in 1850. Son of Chief Iron Shell. The historians as well as the indians today on the Rosebud Reservation regards him as one of the most important leaders in the 1800s. In his way of speaking and his tactical ability he was a strong opponent in any negotiation. Hollow Horn Bears diplomatic manner was regarded by those in power in Washington and he was invited several times by the President to go to Washington and speak about his peoples problems and present their demands for justice.

16 years old he took part in the Siouxs attacks on the Pawnee people. During Red Clouds war 1866-1868, he lead attacks on American troops both in Wyoming and Montana, and in 1869 against the workers at the Union Pacific Railroad. After the end of the wars he became a Police Captain at the Rosebud Agency and he was given the task of arresting Crow Dog who killed Spotted Tail. His portrait has been used on a 14 cent stamp, on a 5 Dollar silver certificate, and on the reverse side of "the buffalo nickel". After he participated in the installation of President Woodrow Wilson, Hollow Horn Bear became sick of phneumonia and died after a couple of days on the 15th of March 1913. Hollow Horn Bear had 2 wifes and a large number of children.

One of his grandchildren Albert White Hat, born in 1938, was a teacher at the Sinte Gleska University on the Rosebud Reservation. He was responsible for the education of the Lakota language. In the making of the movie "Dances with wolves" he was educating Kevin Costner in the Lakota language.