Villasur expedition
The Villasur expedition of 1720 was a Spanish military expedition intended to check New France's growing influence on the North American Great Plains, led by Lieutenant-General Pedro de Villasur. Pawnee and Otoe Indians attacked the expedition in Nebraska, killing 36 of the 40 Spaniards, 10 of their Indian allies, and a French guide. The survivors retreated to their base in New Mexico.
Background
In the first part of the 18th century, French explorers and fur traders began to enter the plains west of the Missouri River, which they claimed as Louisiana. In 1714, Étienne de Veniard, Sieur de Bourgmont became the first colonial explorer known to have reached the mouth of the Platte River, although other French traders may have visited the area and lived among the Indians. Spain had claimed ownership of the Great Plains since the Coronado expedition of the 16th century, but had done little to assert this claim, and was now worried about the growing French influence in the region. In 1718, the War of the Quadruple Alliance broke out between France and Spain.Expedition
Antonio Valverde y Cosío, governor of the Spanish colony of Nuevo México based in Santa Fe, ordered Villasur to capture French traders on the plains. Spanish authorities hoped to gather intelligence about French ambitions in the region. Villasur had no experience with Indians, but he left Santa Fe on June 16, 1720, leading an expedition which included about 40 soldiers of a mounted frontier corps known as cuera or leather soldiers, 60 to 70 Pueblo allies, a priest, a Spanish trader, and approximately 12 Apache guides, who were tribal enemies of the Pawnee. Scout leader José Naranjo was of African-Hopi parentage, and he might have previously reached the South Platte River area.The expedition made its way northeast through Colorado, Kansas, and Nebraska. In August, they made contact with the Pawnee and Otoe along the Platte and Loup rivers. Villasur made several attempts to negotiate with Indians in the area, using Francisco Sistaca, a Pawnee held as a slave, to translate. On August 13, Sistaca disappeared from camp. Villasur camped that night just south of the Loup–Platte confluence near present-day Columbus, Nebraska, nervous about the possibility of attack and the increasing number and belligerence of the Pawnee and Otoe Indians.