Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The Carta marina (Latin "map of the sea" or "sea map"), created by Olaus Magnus in the 16th century, is the earliest map of the Nordic countries that gives details and placenames. Only two earlier maps of Scandinavia are known, those of Jacob Ziegler and Claudius Clavus. The map was created in Rome by the Swedish ecclesiastic Olaus Magnus (1490–1557), who arrived on a diplomatic visit for the Swedish government and stayed on, likely because his brother Johannes Magnus became involved in a religious feud with King Gustav I of Sweden. The notes on the map in Latin were translated by Olaus into Italian and German. It is generally considered that the "A description of the Northern peoples" ("Historia de gentibus septentrionalibus", Rome, 1555) is a much larger commentary on the map.