The Ponca (Páⁿka iyé: Páⁿka or Ppáⁿkka pronounced ) are a Midwestern Native American tribe of the Dhegihan branch of the Siouan language group. There are two federally recognized Ponca tribes: the Ponca Tribe of Nebraska and the Ponca Tribe of Indians of Oklahoma. Their oral history states they originated as a tribe east of the Mississippi River in the Ohio River valley area and migrated west for game and as a result of Iroquois wars. The term Ponca was the name of a clan among the Kansa, Osage, and Quapaws. The meaning of the name is "Those Who Lead." Early history At first European contact, the Ponca lived around the mouth of the Niobrara River in northern Nebraska. According to tradition, they moved there from an area east of the Mississippi just before Columbus' arrival in the Americas. Siouan-speaking tribes such as the Omaha, Osage, Quapaw and Kaw also have traditions of having migrated to the West from east of the Mississippi River. The invasions of the Iroquois from their traditional base in the north pushed those tribes out of the Ohio River area. Scholars are not able to determine precisely when the Dhegiha Siouan tribes migrated west, but know the Iroquois also pushed tribes out from the Ohio and West Virginia areas in the Beaver Wars. The Iroquois maintained the lands as hunting grounds. The Ponca appear on a 1701 map by Pierre-Charles Le Sueur, who placed them along the upper Missouri. In 1789, fur trader Juan Baptiste Munier was given an exclusive license to trade with the Ponca at the mouth of the Niobrara River. He founded a trading post at its confluence with the Missouri, where he found about 800 Ponca residing. Shortly after that, the tribe was hit by a devastating smallpox epidemic. In 1804, when they were visited by the Lewis and Clark Expedition, only about 200 Ponca remained. Later in the 19th century, their number rose to about 700. Most of the leadership of the Ponca people was destroyed in 1824. Hostile Lakotas attacked a delegation of 30 leaders of various rank returning from a visit in a friendly Oglala Lakota camp. Only twelve survived. "Numbered among the dead were all the Ponca chiefs, including the famous Smoke-maker ...". Unlike most other Plains Indians, the Ponca grew maize and kept vegetable gardens. Their last successful buffalo hunt was in 1855. Treaties with the