1275463 Portrait of Juan Ponce de Leon (1474 ??1521) (hand coloured engraving). by Spanish School, (17th century); Private Collection; (add.info.: Juan Ponce de Le籀n (1474 ??1521) was a Spanish explorer and conquistador. He became the first Governor of Puerto Rico by appointment of the Spanish crown. He led the first European expedition to Florida, which he named. He is associated with the legend of the Fountain of Youth, reputed to be in Florida; ); Prismatic Pictures ; Spanish, out of copyright.