In 1508, Ponce de León became the first appointed governor of Puerto Rico, founding the first settlement of Caparra between the modern-day cities of Bayamón and San Juan. After being named Governor, de León and the conquistadors forced the Tainos to work in the mines and to build fortifications; many Tainos died as a result of cruel treatment during their labor. In 1510, upon Agüeybaná's death, his brother Güeybaná, better known as Agüeybaná II (The Brave), and a group of Tainos led Diego Salcedo, a Spaniard, to a river and drowned him, proving to his people that the white men were not gods.