Sebastián Moyano y Cabrera, best known as Sebastián de Belalcázar was a Spanish conquistador. Belalcázar, also written as Benalcázar. He is known as the founder of important early virreinal cities in the northwestern part of South America; Quito in 1534 and Cali, Pasto, and Popayán in 1537. Belalcázar led expeditions in present-day Ecuador and Colombia and died of natural causes after being sentenced to death in the port of Cartagena de Indias in 1551.