"Otto I (1117 – 11 July 1183), called the Redhead (German: der Rotkopf), was Duke of Bavaria from 1180 until his death. He was also called Otto VI as Count Palatine of Bavaria from 1156 to 1180. He was the first Bavarian ruler from the House of Wittelsbach, a dynasty which reigned until the abdication of King Ludwig III of Bavaria in the German Revolution of 1918." - (en.wikipedia.org 29.10.2019)
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