Nikolaus Ludwig, Reichsgraf von Zinzendorf und Pottendorf was a German religious and social reformer, bishop of the Moravian Church, founder of the Herrnhuter Brüdergemeine, Christian mission pioneer and a major figure of 18th-century Protestantism.

August Gottlieb Spangenberg was a German theologian and minister, and a bishop of the Moravian Church. As successor of Count Nicolaus Zinzendorf, he helped develop international missions and stabilized the theology and organization of the German Moravian Church.