The Dutch glassmaker’s son and rector of the Latin school in Zutphen, Marcellus Franckheim (Zutphen 1587- Dunkirk 1644), converted from Calvinism to Catholicism in 1614 and became secretary to...Show moreThe Dutch glassmaker’s son and rector of the Latin school in Zutphen, Marcellus Franckheim (Zutphen 1587- Dunkirk 1644), converted from Calvinism to Catholicism in 1614 and became secretary to Cardinal Melchior Khlesl at the court of the Habsburg Emperor Matthias. He ended his life as councillor to the Spanish King Philip IV in the admiralty of the Flanders fleet. By analysing Franckheim’s surviving correspondence and publications, this thesis shows that while Franckheim’s life on first sight seems full of unexpected moves and change, there is a remarkable continuity in his faith, his contacts and his opinions. It also shows that the Dutch Gomarist-Arminian controversy during the Twelve Years Truce directly influenced his decision to convert and that a group of engaged Zutphen Catholic citizens connected him to the Counter-Reformation world of the Habsburg courts in Europe. Using Marcellus Franckheim as an exemplary case, this thesis addresses the broader question of how Dutch Catholics in the early seventeenth century, both in the Low Countries and in exile, participated in local and transnational networks to promote and consolidate their faith. It also provides insight in the interconnectedness of the political and religious conflicts in the Low Countries and the Holy Roman Empire, in particular with regard to the ways in which individuals felt involved and tried to influence these events.Show less