Frederick IV, Landgrave of Thuringia 생일, 생년월일

Frederick IV (before 30 November 1384 – 7 May 1440), nicknamed the Peaceful (German: Friedrich der Friedfertige) or the Simple (der Einfältige), was a member of the House of Wettin and Margrave of Meissen who ruled as the last independent Landgrave of Thuringia from 1406 until his death.

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