Janssonius (Jansson; Janz; Janszoon), Johannes (Jan) I
Janssonius Family: 17th Century, influential in map publishing first in Arnheim, then in Amsterdam. Johannes (Jan) I was an Arnheim printer, publisher and bookseller who collaborated with the Hondius family for 1607–1621 editions of the Mercator–Hondius “Atlas Minor” and with Magini for his 1617 version of Ptolemy’s “Geographica”.