Nicolaus Olai Campanius (1593–1624), also known as Nolandus, was a Swedish Catholic convert and Rector of a school in Enköping.
[1] Companius complained that his Jesuit instructors in Olomouc were as eager to procure converts to their religion "as the Devil to pursue the soul".
After leaving Olomouc, he spent some time among exiled Swedes in Poland, where he gained support of King Sigismund III Vasa in years 1616–17.
Campanius was again accused of being a Roman Catholic, seducing his students to become Catholics or even Jesuits by inducing them to complete their education abroad at Jesuit institutions and of collaboration with the arch-enemies of Sweden (i.e. emigrants in Poland under leadership of the former king of Sweden Sigismund III.)
Presumably his head was struck of shoulders and placed on a stake as a warning to the general population, as was the custom in Sweden at the time.