What Spaniard fought the Tiwa Indians and saw the Colorado River?
Tiguex War:  It was fought in the winter of 1540-41 by the expedition of Francisco Vázquez de Coronado against the twelve or thirteen pueblos of Tiwa Indians as well as other Puebloan tribes along both sides of the Rio Grande, north and south of present-day Bernalillo, New Mexico, in what was called the Tiguex Province. Francisco Vázquez de Coronado:  His expedition marked the first European sightings of the Grand Canyon and the Colorado River, among other landmarks.
i don't know