Allying himself with Ternate's ruler, Serrão constructed a fortress on that tiny island and served as the head of a mercenary band of Portuguese seamen under the service of one of the two local feuding sultans who controlled most of the spice trade. Such an outpost far from Europe generally only attracted the most desperate and avaricious, and as such the feeble attempts at Christianization only strained relations with Ternate's Muslim ruler. Serrão urged Ferdinand Magellan to join him in Maluku, and sent the explorer information about the Spice Islands. Both Serrão and Magellan, however, perished before they could meet one another, with Magellan dying in battle in Macatan. In 1535 Sultan Tabariji was deposed and sent to Goa in chains, where he converted to Christianity and changed his name to Dom Manuel. After being declared innocent of the charges against him he was sent back to reassume his throne, but died en route at Malacca in 1545. He had however, already bequeathed the island of Ambon to his Portuguese godfather Jordão de Freitas. Following the murder of Sultan Hairun at the hands of the Europeans, the Ternateans expelled the hated foreigners in 1575 after a five-year siege.