John Frederick I, Elector of Saxony
| John Frederick I | |
|---|---|
Portrait by Lucas Cranach the Elder, 1531 | |
| Elector of Saxony | |
| Reign | 16 August 1532 – 24 April 1547 |
| Predecessor | John |
| Successor | Maurice |
| Duke of Saxony | |
| Reign | 24 April 1547 – 3 March 1554 |
| Predecessor | Maurice |
| Successor | John Frederick II |
| Landgrave of Thuringia | |
| Reign | 16 August 1532 – 24 April 1547 |
| Predecessor | John |
| Successor | John Ernest |
| Born | 30 June 1503 Torgau, Electorate of Saxony, Holy Roman Empire |
| Died | 3 March 1554 (aged 50) Weimar, Electorate of Saxony, Holy Roman Empire |
| Burial | |
| Spouse | Sybille of Cleves |
| Issue | John Frederick II, Duke of Saxony John William, Duke of Saxe-Weimar John Frederick III, Duke of Saxe-Gotha |
| House | Wettin (Ernestine line) |
| Father | John, Elector of Saxony |
| Mother | Sophie of Mecklenburg-Schwerin |
| Religion | Roman Catholic (1503-1521) Lutheran (1521-1554) |
| Signature | |
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John Frederick I (German: Johann Friedrich I. von Sachsen, 30 June 1503 – 3 March 1554), called the Magnanimous (der Großmütige), was the Elector of Saxony (1532–1547) until he was deprived of this title in the Capitulation of Wittenberg by Charles V, Holy Roman Emperor. He was leading the Schmalkaldic League, a military alliance of Lutheran principalities.