 Fregenal de la Sierra and Higuera la Real became a part of Sevilla.A number of well-known conquistadors came from Sierra Suroeste, such as Alonso Rodríguez Santos and Hernando de Soto.Perhaps the most famous of these was Vasco Núñez de Balboa, who was born in Jerez de los Caballeros, and who is best known for conquering Panamá and discovering the Pacific ocean.