Johannes Isacius Pontanus

Born 21 January 1571, Pontanus was the son of Margaretha van Delen and Isaac Pietersz, the Dutch consul to Denmark stationed in Helsingør.

[2] The next year he defended his Dissertatio de rationalis animas facilitate and traveled to Rome, visiting German scholars on his return trip.

[2] Subsequently, Pontanus visited Denmark where his parents had returned and became acquainted with Tycho Brahe and Arild Huitfeldt.

The following years he traveled to German, Swiss and French cities, in part escorting three young family members of Brahe.

[4] In 1621, he was asked to write a history of Guelders which he based largely on work of Paulus Merula en Johannes Luntius and finished in 1639.