Schwarzburg-Sondershausen

County (Principality) of Schwarzburg-Sondershausen
Grafschaft (Fürstentum) Schwarzburg-Sondershausen (German)
1599–1918
Flag of Schwarzburg-Sondershausen
Flag
Coat of arms of Schwarzburg-Sondershausen
Coat of arms
Schwarzburg-Sondershausen within the German Empire
Schwarzburg-Sondershausen within the German Empire
Schwarzburg-Sondershausen within Thuringia
Schwarzburg-Sondershausen within Thuringia
StatusState of the Holy Roman Empire,
State of the Confederation of the Rhine,
State of the German Confederation,
State of the North German Confederation,
State of the German Empire,
State of the Weimar Republic
CapitalSondershausen
GovernmentPrincipality
Prince 
• 1697–1716
Anton Günther II (first)
• 1909–1918
Günther Victor (last)
Historical eraMiddle Ages
• Partitioned from
    Schwarzburg
1599
• Raised to Principality
1697
1918
• Merged into Thuringia
1920
Preceded by
Succeeded by
County of Schwarzburg
Thuringia
Karl Günther, the last Prince of Schwarzburg-Sondershausen
The castle at Sondershausen

Schwarzburg-Sondershausen was a small principality in Germany, in the present day state of Thuringia, with its capital at Sondershausen.