American Horse (1840-December 16, 1908) was a chieftain of the Oglala Sioux during the Sioux Wars of the 1870s. He was also the nephew of the elder American Horse and son-in-law of Red Cloud. Born as "Wasechun-tashunka" to Sitting Bear in the Black Hills of present day South Dakota, American Horse became known as a prominent warrior during the Bozeman Trail War in 1866. Wikipedia
The definitive Wikipedia entry for American Horse. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/American_Horse