Rock Forehead was a cousin of Black Kettle. His nephew, Little Man, would later become Arrow Keeper after his son, Black Hairy Dog. Several of his children took part in violent confrontations with whites. His youngest son, Fox Tail, was accused of killing a Mexican herder at Fort Zarah in 1866 during a drunken brawl. His oldest son, Tall Wolf, was one of the principal men who took part in violent raids on white settlements along the Saline and Solomon rivers in Kansas in August 1867 and August 1868, one of the precipitating events leading ultimately to the Battle of the Saline River and the Battle of Washita River in 1867 and 1868 respectively. Rock Forehead's camp was one of several camps along the Washita River downstream of Black Kettle's village at the time the battle of the Washita which took place on November 27, 1868.