The Buccaneers of La Bucca

A former prison island far off the coast of Castille, La Bucca has become a beacon of liberty for all. The prisoners of La Bucca—now called Buccaneers—stole back their freedom from their jailers when they faked an outbreak of the plague, allowing them to capture the island in the ensuing panic.
Rumors of raiders from the island eventually caused the Castillians, the Vodacce and the Vesten to each send a warship, leading to a four-way stalemate. The three foreign captains discovered their fresh water supplies unexpectedly gone—some suggest it was sabotaged by sorcery or underhanded legerdemain—and when the leader of the Buccaneers offered the Vodacce, Castillians and Vesten the choice of a treaty or death from thirst, the foreign captains capitulated.
The Buccaneer leader is a man named Allende. Due to some rumored “unusual occurrences,” most believe him to be a sorcerer. For example, one prison guard tells the story of placing a pistol against Allende’s chest and pulling the trigger. He saw Allende fall backwards, then get back to his feet, completely unharmed.
Allende and his Buccaneers now welcome all fleets with either friendship or the sword. Any who sight the island are welcome to dock in her safe harbors. They find fresh water, salted pork, unfettered trade in goods and secrets and a host of Buccaneers ready to sign Letters of Marque for any who will hire them.
Beyond the horizon of La Bucca, and all over Théah and the New World, those same Buccaneers roam the waves, knives sharp and cannon ready, looking for any ships whose names do not appear on their numerous Letters of Marque.