Col. John M. Francisco, the sutler at Fort Garland, and his business partner, Henry Daigre, purchased 48,000 acres of land in Cuchara Valley in 1862. The land was part of the Vigil land grant. They established a settlement for farmers and ranchers, with Francisco Fort as the commercial center. The 100-foot-square building was constructed with 2-foot thick adobe walls, interior rooms, that opened up to a central plaza. It was built with a flat roof with gun ports along the parapets. In 1863, the fort was attacked by a band of Ute people. Men got on the roof to defend the fort, and a volunteer rode to Fort Lyon. The Utes retreated, though, before the troops arrived.