Back Фридрих IV (Майсен и Тюрингия) Bulgarian Friedrich IV. (Meißen und Thüringen) German Φρειδερίκος Δ΄ της Θουριγγίας Greek Federico IV de Turingia Spanish Frédéric IV de Thuringe French Federico IV di Turingia Italian フリードリヒ4世 (テューリンゲン方伯) Japanese Frederik IV van Thüringen Dutch Fryderyk IV (landgraf Turyngii) Polish Фридрих IV (ландграф Тюрингии) Russian
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Frederick IV | |
|---|---|
| Landgrave of Thuringia | |
 Thuringia-Meissen coat of arms | |
| Born | before 30 November 1384 |
| Died | 7 May 1440 Runneburg Castle, Weißensee, Thuringia |
| Noble family | House of Wettin |
| Spouse(s) | Anna of Schwarzburg-Blankenburg |
| Father | Balthasar, Landgrave of Thuringia |
| Mother | Margaret of Nuremberg |
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.