Columbia subject headings:
Harvard subject headings:
Calvinism--Germany--Brandenburg--Influence.
Calvinists--Germany--Brandenburg.
Converts--Germany--Brandenburg.
Lutheran Church--Germany--Brandenburg.
Religious tolerance--Germany--Brandenburg.
Sigismund, John, 1572-1619--Religion.
Princeton subject headings:
Calvinism--Germany--Brandenburg--Influence.
Calvinists--Germany--Brandenburg.
Converts--Germany--Brandenburg.
Lutheran Church--Germany--Brandenburg.
Religious tolerance--Germany--Brandenburg.
Sigismund, John, 1572-1619--Religion.