About Frederick IV
Lived 1384 – 1440 (aged 55). Frederick IV was a politician.
Frederick IV (before 30 November 1384 – 7 May 1440), nicknamed the Peaceful 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.
Life He was the son of Landgrave Balthasar of Thuringia and his first wife, the Hohenzollern princess Margaret of Nuremberg. His father had received the Landgraviate of Thuringia in the 1382 Division of Chemnitz and was able to largely extend his territories in several skirmishes with the local nobility. After the death of his first wife Margaret in 1391, he secondly married the Ascanian princess Anna of Saxe-Wittenberg.
Landgrave Balthasar planned to marry his son off to Elizabeth of Görlitz, a granddaughter of the late Luxembourg emperor Charles IV; nevertheless, these attempts had already failed, when Frederick succeeded his father in 1406. One year later he married Countess Anna (d. 1431), the daughter of Count Günther XXX of Schwarzburg-Blankenburg. Their marriage remained childless.
Frederick is considered a relatively weak ruler, who was at times very dependent on the influence of his wife and her relatives. To finance his lavish court, he sold more and more land and titles. In 1436, he had all Jews expelled from Thuringia.
After Frederick's death without heirs, Thuringia was inherited by his two Wettin cousins, Elector Frederick II of Saxony and his brother William III. He had already sold them the more remote areas of Meissen some years earlier for . The succession led to the 1445 Division of Altenburg and the subsequent Saxon Fratricidal War.
Ancestors
Don’t just read it —
keep it.
Full-length biographies made to live with: read them, listen on the way to work, watch them tonight.
- E-book
- Audio
- Video
Instant download · yours to keep · every purchase keeps this site free
Important facts
People in Frederick IV's life
Named in this biography and alive at the same time
Contemporaries
People whose lives overlapped Frederick IV's
Frequently asked questions
Who was Frederick IV?
Landgrave of Thuringia, Margrave of Meissen
When was Frederick IV born?
Frederick IV was born on 30 November 1384.
When did Frederick IV die?
Frederick IV died on 7 May 1440 in Weißensee.
What was Frederick IV's occupation?
Frederick IV was a politician.
Sources & further reading
· DBpedia: Frederick IV of Thuringia
Cite this page
APA: Biography.guide. (2026). Frederick IV. https://biography.guide/frederick-iv/
MLA: "Frederick IV." Biography.guide, https://biography.guide/frederick-iv/.
Chicago: "Frederick IV." Biography.guide. https://biography.guide/frederick-iv/.
Data last updated: 2026-09-20 · Spot an error? Report a correction.
Page generated 2026-09-27 05:30 UTC