Source
Source: Duke August I, Elector of Saxony. Woodcut by Zacharias Wehme, second half of the 16th century. Grafische Sammlung München. Available online at: http://www.zeno.org/nid/20004362535
Duke August (r. 1553-86), the political leader of the Lutheran princes and cities, collaborated with the emperor and sponsored the Formula of Concord of 1577, an agreement that ended the fierce doctrinal quarrels of the post-Luther generation.
Source: Duke August I, Elector of Saxony. Woodcut by Zacharias Wehme, second half of the 16th century. Grafische Sammlung München. Available online at: http://www.zeno.org/nid/20004362535