Duke Siegfried August in Bavaria

Duke Siegfried of Bavaria, full German name Siegfried August Maximilian Maria, Herzog in Bayern was a Duke in Bavaria and member of the House of Wittelsbach. Siegfried August was the first of three sons of Duke Maximilian Emanuel in Bavaria and his wife Princess Amalie of SaxeCoburg and Gotha. Siegfried August was the brother of Christoph Joseph Clemens Maria, Duke in Bavaria and Luitpold Emanuel Ludwig Maria, Duke in Bavaria.

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Source: Wikipedia