Nassau-Siegen

Principality of Nassau-Siegen
Fürstentum Nassau-Siegen
1303–1328 and 1606–1743
StatusState of the Holy Roman Empire
CapitalSiegen
GovernmentPrincipality
Prince-Count 
• 1303–1328
Henry
• 1606–1623
John VII
• 1699–1743
William Hyacinth
History 
• Split off from N-Dillenburg
1303
• reunited with N-Dillenburg
1328
• Split off from N-Dillenburg again
1606
• Divided into Catholic and Protestant parts
1626
• C and P parts reunited
1734
• Fell to Orange-Nassau-Dietz
1743
Princely Coat of Arms of Nassau-Siegen

Nassau-Siegen was a principality within the Holy Roman Empire that existed between 1303 and 1328, and again from 1606 to 1743. From 1626 to 1734, it was subdivided into Catholic and Protestant parts. Its capital was the city of Siegen, founded in 1224 and initially a condominium jointly owned by the archbishopric of Cologne and Nassau. It was located some 50 km east of Cologne, and it contained the modern localities of Freudenberg, Hilchenbach, Kreuztal, Siegen, and Wilnsdorf.