[1] He was however raised, at least partly, by Malgarida who was an emancipated black African slave in service of Diego de Almagro.
Together with his father, they led about 100 Spanish soldiers while Francisco Pizarro, the leader of the expedition, went south, capturing the Sapa Inca Atahualpa in a surprise attack, the so-called Battle of Cajamarca.
El Mozo and his father, Diego, went to Cajamarca in 1533, but they received no gold for the capture and pressed to get the Incas executed, which finally happened on July 26.
After Pizarro's death, El Mozo was named governor by the conspirators but after failing to be accepted as such he fled to Cuzco with his supporters.
He was eventually defeated and captured on September 16, 1542 in the Battle of Chupas by the troops of Cristóbal Vaca de Castro, who had succeeded Pizarro as governor; El Mozo was executed at the city square after a brief trial.