The famous Barbary Corsairs of the Mediterranean, authorized by the Ottoman Empire, were privateers, as were the Maltese Corsairs, who were authorized by the Knights of St. John, and the Dunkirkers in the service of the Spanish Empire. In the years 1626–1634 alone, the Dunkirk privateers captured 1,499 ships, and sank another 336. From 1609 to 1616, England lost 466 merchant ships to Barbary pirates, and 160 British ships were captured by Algerians between 1677 and 1680. One famous privateer was Sir Francis Drake. His patron was Queen Elizabeth I, and their relationship ultimately proved to be quite profitable for England.