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).
... (1741-1788), French explorer of the Pacific
Meriwether Lewis, (1774-1809), leader of the first American expedition to cross the continent
David Livingstone, (1813-1873), ...