Suma y narracion de los Incas, que los indios llamaron Capaccuna, que fueron señores de la ciudad del Cuzco y de todo lo á ella subjeto

Juan de Betanzos

Juan Diez de Betanzos wrote one of the most important sources on the conquest of the Inca civilization, Narrative of the Incas. He based this account of the Incas on the testimony of his wife Cuxirimay Ocllo, who had been previously married to Inca King Atahualpa as well as conducting interviews of Incas who had taken part in the Battle of Cajamarca or been in Atahualpa's camp.