After a trip abroad, he was hired in 1655 as eloquentiæ lecturer at Stockholm High School, and almost at the same time he was given the task of organizing Axel Oxenstierna libraries and archives.
He soon found a patron in Chancellor Magnus Gabriel De la Gardie, which among other things provided him power of attorney.
After being granted any historical tables, Lumen chronographicum (1664–66), he seized undertake to, at the pleasure of the Chancellor, depicting Jacob De la Gardie "commendable actioner in Muscovite War", but produced at the same time (November 1666) the desire to write the history of Sweden from Gustav Vasa's death and continuera Seriem rerum, "unto our time."
On October 28, 1668 was given him the royal command to write a complete history of the "gustavianske Vasa kings" to Gustavus Adolphus German expedition.
This article contains content from the Owl Edition of Nordisk familjebok, a Swedish encyclopedia published between 1904 and 1926, now in the public domain.