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John Frederick III, Duke of Saxony

Titular duke of Saxony; nominal Duke of Saxe-Gotha
The basics
AKA Duke of Saxony John Frederick III
Date of birth Torgau
Date of death Oct 31, 1565 Jena
Mother: Sibylle of Cleves
Brother(s): John Frederick II Duke of Saxony John William Duke of Saxe-Weimar
Father: John Frederick I Elector of Saxony
Authority Library of congress id VIAF id
The details

John Frederick III, also known as John Frederick the Younger (16 January 1538 in Torgau – 21 October 1565 in Jena) was German nobleman. He was a titular Duke of Saxony from the Ernestine branch of the House of Wettin. He received Saxe-Gotha as an apanage, but left its administration to his eldest brother.


John Frederick was the fourth and youngest son of Elector of Saxony John Frederick the Magnanimous (1503-1554) from his marriage with Sibylle (1512-1554), the daughter of Duke John III, Duke of Cleves.

Due to neglect during his childhood, he was always sickly and weak. He had been interested in theology from a young age, and studied theology at the University of Jena.

After his father's death in 1554, he received Saxe-Gotha as an apanage. Because he was a minor, he and his possessions were under the guardianship and regency of his eldest brother John Frederick II until 1557. From 1557, he was allowed to rule Saxe-Gotha alone. However, he concluded a contract with his eldest brother, who would administer the apanage for four years. In 1561, this contract was extended for another four years.

John Frederick III died unmarried and childless in 1565, at the age of 27. He was buried in the City Church in Weimar. Due to his personality, he rarely acted alone, and was usually represented by his brothers.

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