The origin of the designation Acadia is credited to the explorer Giovanni da Verrazzano, who on his 16th century map applied the ancient Greek name "Arcadia" to the entire Atlantic coast north of Virginia (note the inclusion of the 'r' of the original Greek name). "Arcadia" derives from the Arcadia district in Greece which since Classical antiquity had the extended meanings of "refuge" or "idyllic place". The Dictionary of Canadian Biography says: "Arcadia, the name Verrazzano gave to Maryland or Virginia 'on account of the beauty of the trees,' made its first cartographical appearance in the 1548 Gastaldo map and is the only name on that map to survive in Canadian usage." In 1603 a British colony south of the St. Lawrence between the 40th and 46th parallels was agreed by Henry IV who recognised the territory as "La Cadie".[5] Also in the 17th century Champlain fixed its present orthography with the 'r' omitted. William Francis Ganong, a cartographer, has shown its gradual progress northeastwards, in a succession of maps, to its resting place in the Atlantic Provinces of Canada.