Japan & Korea
Willem Janszoon Blaeu (1571-1638) born at Alkmaar, trained in astronomy and the sciences by Tycho Brahe, the Danish astronomer, founded his business in Amsterdam in 1599. Originally a globe and instrument maker, he later expanded into publishing maps, topographical works and books of sea charts. He bought between 30 and 40 plates of the Mercator Atlas from Jodocus Hondius II which he utilized in part, in 1630, to complete his Atlantis Appendix, a 60-map volume. It was another five years before the first two volumes of his planned world atlas, Atlas Novus or the Theatrum Orbis Terrarum were issued. At about this same time he was appointed Hydrographer to the East India Company. A true rivalry developed between Willem and Jan Jansson. Before 1620, Blaeu signed his works Guilielmus Janssonius or Willems Jans Zoon. From 1620 onward, he apparently preferred Guilielmus or G. Blaeu.