"Frederick Heinrich of Saxe-Zeitz-Pegau-Neustadt (b. Moritzburg, 21 July 1668 - d. Neustadt an der Orla, 18 December 1713), was a German prince of the House of ...
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Wettin.
He was the fourth (but third surviving) son of Maurice, Duke of Saxe-Zeitz, and his second wife, Dorothea Maria of Saxe-Weimar." - (en.wikipedia.org 29.01.2020)