Bernal Díaz del Castillo (1492 – ca. 1580) was a conquistador, who wrote an eyewitness account of the conquest of Mexico by the Spaniards under Hernán Cortés, himself serving as a rodelero under Cortés. Born in Medina del Campo (Spain), he came from a family of little wealth and he himself had received only a minimal education. He sailed to Tierra Firme in 1514 to make his fortune, but after two years found few opportunities there. Much of the native population had already been killed by epidemics and there was political unrest. So he sailed to Cuba, where he was promised a grant of Indian slaves. But that promise was never fulfilled, leading Díaz, in 1517, to join an expedition being organized by a group of about 110 fellow settlers from Tierra Firme and similarly disaffected Spaniards. They chose Francisco Hernández de Córdoba, a wealthy Cuban landowner, to lead the expedition. It was a difficult venture, and although they discovered the Yucatán coast, by the time the expedition returned to Cuba they were in disastrous shape