Juan de Cartagena
Juan de Cartagena (died c. 1520) was a Spanish aristocrat who served on the Magellan expedition as the inspector general of the fleet and captain of one of the five ships sent by Spain to find a western route to Asia. Cartagena frequently argued with Magellan during the voyage and questioned his authority. Following a failed mutiny attempt of which Cartagena was the principal organizer, Magellan marooned Cartagena on a remote island in Patagonia in 1520, before continuing on to the Strait of Magellan.