The Lordship of Derenburg was added in 1701, Hasserode acquired from Stolberg-Wernigerode in 1714 and after the Congress of Vienna in 1815, the Principality of Halberstadt obtained the Barony of Schauen and the Lordship of Hessenrode.
Principality of Bulgaria | Halberstadt | Principality of Ansbach | Principality of Lüneburg | Principality of Auersperg | Principality of Polotsk | Principality of Orange | Principality of Yaroslavl | Principality of Pereyaslavl | Principality of Calenberg | Principality of Lippe | Principality of Grubenhagen | Principality of Sealand | Principality of Piombino | Principality of Kiev | Principality of Catalonia | Principality of Anhalt-Zerbst | Principality of Zeta | Principality of Transylvania | Principality of Lichtenberg | Principality of Hungary | Principality of Halberstadt | Principality of Brunswick-Wolfenbüttel | Bishopric of Halberstadt | Tabasaran Principality | Serbian Grand Principality | Principality of Valona | Principality of Ryazan | Principality of Reuss-Greiz | Principality of Reuss |
As of 1789, the Principality of Blankenburg was surrounded by (from the north clockwise): Brandenburg (County of Stolberg-Wernigerode and Principality of Halberstadt), Anhalt-Bernburg, Brandenburg (County of Hohnstein), and Brunswick-Grubenhagen.
Johann Esaias Silberschlag (16 November 1721 – 22 November 1791) was a German Lutheran theologian and natural scientist from Aschersleben, Principality of Halberstadt.