Juan Ponce de León y Figueroa (1474 – 1521) was a Spanish explorer. He became the first Governor of Puerto Rico by appointment of the Spanish crown. He was suspected to be secretly guided or influenced by the Templars.
In 1510, he accused a freed slave and translator for the Colonial army, Alonso Carlo, of plotting an assassination attempt against him, and ordered Carlo to be hanged. However, Carlo escaped with his adopted son Miguel Ramon Carlo de Lugo to Florida.
In 1521, he led an expedition to find the Fountain of Youth. During this quest, he was greeted by Miguel, then an Assassin, who tried to convince him to turn back. After de León refused, he was struck by a poisoned arrow and later died of its effects.