 About the same time he ordered his captain (and later Lieutenant) Gaspar Castaño de Sosa to found Villa de San Luis, now Monterrey, the capital of the modern Mexican state of Nuevo León.Castaño de Sosa is also known as the leader of the first attempt to establish a Spanish settlement in New Mexico.The attempt failed and Castaño de Sosa was arrested and punished by Spanish authorities for his unauthorized expedition.