The name "Colombia" is derived from the last name of Christopher Columbus (Italian: Cristoforo Colombo, Spanish: Cristóbal Colón). It was conceived by the Venezuelan revolutionary Francisco de Miranda as a reference to all the New World, but especially to those under the Spanish and Portuguese rule. The name was later adopted by the Republic of Colombia of 1819, formed out of the territories of the old Viceroyalty of New Granada (modern-day Colombia, Panama, Venezuela, Ecuador, and northwest Brazil).