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).
... to set up a colony
Thomas Cavendish, (died 1592), English sailor and explorer.
Samuel de Champlain, (c. 1567-1635), established the French colony in Canada; ...