NUEVA VIZCAYA. Nueva Vizcaya was the first province of northern Mexico to be explored and settled by the Spanish. Sometimes called the kingdom of Nueva Vizcaya, it served as the “heartland” of the northern frontier for some 250 years. In the early years of settlement the name referred to the area north of Zacatecas. The province eventually included most of the modern Mexican states of Chihuahua and Durango, and, at different times, parts of Sinaloa, Sonora, and Coahuila. The area was initially explored by Nuño de Guzmán in 1531, José de Angulo in 1533, and Ginés Vázquez de Mercado in 1552. Francisco de Ibarra explored the region in 1554, and mining and missionary activities commenced soon thereafter.