 The armorial chart of Zangrius was first published in the 81st volume (1964) of the De Nederlandsche Leeuw by F. J. van Ettro.He maintains that the present-day hatching system was invented by Zangrius.The historical background for the coming into existence of the armorial chart was the 6 March 1598 edict of the Spanish king Philip II who detached the Low Countries in his testament from Spain and gave independence to the Netherlands on the occasion of the marriage of his daughter Infante Isabella to archduke Albrecht Habsburg who served as the governor of the province since 1596.