Naumburg Convention

1561. A conference of twelve Protestant princes and other German Protestant representatives held at Naumburg, Saxony, which sought to secure doctrinal unity, particularly on eucharistic doctrine. It agreed to recognize afresh the Augsburg Confession in both the Invariata (unaltered) edition of 1531 and the Variata (altered) edition of 1540, together with Melanchthon's Apology of 1531. Strict Lutheran divines such as M. Flacius* and T. Heshusius attacked the Invariata as heretical. A violent theological war ensued, ending in the triumph of strict Lutheranism in the Formula of Concord.* The convention also received and rejected an invitation to send delegates to the third session of the Council of Trent.*