Note: Australia is generally considered to be a continental landmass, rather than an island. If however one does count Australia among the islands it, not Greenland, would be the largest in the world (unless one also considered Antarctica an island).
... (born 1922), undersea explorer
Francisco Pizarro, (1471-1541), conqueror of the Inca Empire
Marco Polo, (1254-1323), travelled to China in the 13th century.
John ...