Appletons' Cyclopædia of American Biography/Tupac Inca Yupanqui
TUPAC INCA YUPANQUI (too-pak-ing-kah-yoo-pang'-ke), eleventh inca of Peru, b. in Cuzco about 1420; d. there in 1483. He was a son of the inca Yupanqui and Mama Chimpu Ocllo, and succeeded his father on the throne in 1453, beginning his reign by visiting the different provinces of his empire, in which undertaking he spent four years. After gathering an army of more than 40,000 men at Cajamarca, he conquered the territories of Moyabamba, Chachapoyas, Ayabaca, and Huancabamba, and, on his return to Cuzco, completed the construction of the famous fortress of Sacsahuana, which had been begun under the reign of his father. Some years afterward he marched again to the conquest of the northern tribes and subjugated Huanuco and the Cañari territory. In his old age he sent another army northward, but remained in Cuzco, giving the command to his eldest son, Huayna Capac, who conquered Quito and Pasto, and by whom he was succeeded.