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| Duchy of Saxe-Jena | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 1672–1690 | |||||||||
|   Saxe-Jena, shown with the other Ernestine duchies  | |||||||||
| Status | State of the Holy Roman Empire | ||||||||
| Capital | Jena | ||||||||
| Government | Principality | ||||||||
| Historical era | Middle Ages | ||||||||
| 1672 | |||||||||
| 1690 | |||||||||
| 
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The Duchy of Saxe-Jena was one of the Saxon Duchies held by the Ernestine line of the Wettin Dynasty. Established in 1672 for Bernhard, fourth son of Wilhelm, Duke of Saxe-Weimar, Saxe-Jena was reincorporated into Saxe-Weimar on the extinction of Bernhard's line in 1690.[ citation needed ]
Reincorporated into Saxe-Weimar .