County of Nassau
| County of Nassau Princely County/Principality of Nassau Counties/(later) Principalities of Nassau | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 1125/1159–1806 | |||||||||
| County of Nassau in 1547 | |||||||||
| Status | County | ||||||||
| Capital | Nassau | ||||||||
| Common languages | German (Rhine Franconian dialects, Moselle Franconian dialects) | ||||||||
| Religion | Roman Catholic | ||||||||
| Historical era | Middle Ages | ||||||||
| • Foundation of the city which is the namesake  | 915 | ||||||||
| • Countly title declared and non-recognized  | 1125/1159 | ||||||||
| • Recognition of the title  | 1159 | ||||||||
| • Splitings inside it because of sucession  | 1255–1806 | ||||||||
| • Declaration of the duchy  | 1806 | ||||||||
| 
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| Today part of | Germany | ||||||||
The County of Nassau was a German state within the Holy Roman Empire from the period of the formal recognition of the countly title in 1159 (though "de facto" sovereignty began in 1125) until the declaration of the Duchy of Nassau in 1806 with the creation of the Confederation of the Rhine . Through sucession, it had many counts ruling parts of it, mostly or completely independent of one another. After many of these counts were promoted to princely status, the County was promoted and thus was known as a Princely County or as the Principality of Nassau.