Laramie army officer, wrote that Spotted Tail's daughter, Ah-ho-appa (Fallen Leaf), "... was one of those individuals found in all lands, at all places, and among all people; she was misplaced." He suggested that she adopted some European-American practices, and that she was thought to be secretly in love with one of the officers at the fort. When she was dying in 1866, Fallen Leaf made her father promise that she would be buried on a hillside overlooking Fort Laramie. The entire garrison at the post helped Spotted Tail to honor her request by arranging for a ceremonial funeral, including a Christian service and Sioux ceremony. Many years later, Spotted Tail had her remains transported to the Rosebud Indian Agency in South Dakota and re-interred. Treaty of Fort Laramie Spotted Tail agreed to the treaty, which in 1868 established the Great Sioux Reservation in West River, west of the Missouri River. In 1871, the senior Spotted Tail visited Washington, D.C. to meet the Commissioner of Indian Affairs Ely S. Parker and President Ulysses S. Grant. While there, he met with Red Cloud, a chief of the Oglala Lakota, and they agreed to work together on preserving Sioux rights and land. In 1881, following the Black Hills War, Spotted Tail was killed by Crow Dog for reasons that have been disputed. Luther Standing Bear claimed Spotted Tail was killed by Crow Dog for having sold land not belonging to him and for taking the wife of a crippled man. Although these actions are said to have angered many Sioux leaders, Spotted Tail refused to give the woman back, claiming the United States government stood behind him. Several men decided to kill Spotted Tail but, before they could act, he was killed by Crow Dog on August 5, 1881. According to historian Dee Brown: "White officials...dismissed the killing as the culmination of a quarrel over a woman, but Spotted Tail's friends said that it was the result of a plot to break the power of the chiefs." Prelude to the Great Sioux War of 1876-77 In 1874, George Armstrong Custer led a reconnaissance mission into Sioux territory that reported gold in the Black Hills, an area held sacred by the local Indians. Formerly, the Army tried to keep miners out but did not succeed; the threat of violence grew. In May 1875, delegations headed by Spotted Tail, Red Cloud, and Lone Horn