Frederick IV, Landgrave of Thuringia
Member of the House of Wettin
Frederick IV, nicknamed the Peaceful or the Simple, 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. Wikipedia
Born: November 30, 1384
Died: May 7, 1440 (age 55 years), Weissensee, Germany
Partner: Anne von Schwarzburg-Sondershausen (1407–)