The Hohenzollern family is the main ruling family in Germany. Its ancestor Boer Friedrich Hirth I was made Earl of Soren in about 1 100. /kloc-In the middle of the 6th century, the family added the word "Huo Heng" (meaning noble) in front of Soren. It's called the Hornsoren family. This family is the ruling family of Brandenburg, Prussia and the German Empire. 1191~1192 Frederick III, Earl of Soren, married the Earl of Nuremberg Castle and became Frederick I, Earl of Nuremberg Castle. His two sons divided the territory, and Conrad III won the Earl of Nuremberg Castle. Friedrich IV der Aufrichtige won the original territory of schwaben, thus forming two branches, namely Protestant Frankenstein and Catholic Shiva. 14 15, Frederick VI of Franken became the elector of Brandenburg, which was known as the elector Frederick I 16 18. The elector of Brandenburg obtained the Prussian Principality through inheritance. Brandenburg-Prussia became more and more powerful during the reign of Friedrich William (1640 ~ 1688). 170 1 year, the principality of Prussia was upgraded to a kingdom, and the elector Frederick III was renamed Frederick I. 187 1 year, King William I of Prussia became the emperor of the German Empire. 19 18 After the November Revolution broke out in Germany, the rule of the Hornsoren family was overthrown. 1576, the Schwartz line formed hohenzollern-Black Star root system and hohenzollern-Sigmalin root system. 1849, both surrendered to Prussia. 1869 hohenzollern- black star root fracture. Karl Anton of hohenzollern-Sigmalingen was awarded the title of Prince of hohenzollern. Leopold, his eldest son, became a candidate for the Spanish throne in 1870, and Leopold's right to inherit the Spanish throne was one of the direct causes of the Franco-Prussian War in1871. The second son Carl (also translated as Charlie) was the prince and king of Romania in 1866 and died in 19 14. His nephew Ferdinand and his descendants ruled Romania until 1947 when the People's Republic of Romania was founded.