Wikipedia
Petalesharo
Petalesharo (c. 1797 – c. 1832) was a Skidi Pawnee chief who rescued an Ietan Comanche girl from a ritual human sacrifice in 1817 (in present-day Nebraska) and earned publicity for his act in national newspapers. In 1821, he was one of numerous Great Plains tribal chiefs to go to Washington, DC as part of the O'Fallon Delegation where they met President James Monroe.