Kingdom of Prussia Index

Wilhelm II, last German Emperor and King of Prussia, reigned 1888 – 1918; Credit – Wikipedia

The Protestant Franconian branch of the House of Hohenzollern ruled as Margraves of Brandenburg, Dukes of Prussia, Electors of Brandenburg, Kings of Prussia from 1415 until 1918. The first King in Prussia succeeded his father as Friedrich III, Duke of Prussia, Elector of Brandenburg in 1688.  The Electorate of Brandenburg was part of the Holy Roman Empire, while the Duchy of Prussia – formerly a fief of the Crown of Poland – lay outside the Empire’s borders. The Duchy had been inherited by the Hohenzollern Prince-Electors of Brandenburg in 1618 and was ruled in personal union.

In November 1700, in exchange for supporting the Holy Roman Empire in the Spanish War of Succession, Leopold I, Holy Roman Emperor agreed to allow Friedrich III, Duke of Prussia, Elector of Brandenburg to make Prussia a kingdom and become its first king. Because the Hohenzollerns’ sovereignty over the Duchy of Prussia was dependant upon succession in the male line (and would return to the Polish crown if there were no male heirs to succeed), Friedrich I agreed to style himself King in Prussia and not King of Prussia.  In 1772, King Friedrich II in Prussia, through several battles and wars, united the various parts of his kingdom, taking the title King of Prussia.

In 1871, the German Empire, consisting of four kingdoms, six grand duchies, five duchies, seven principalities, three free Hanseatic cities, and one imperial territory, was proclaimed. The King of Prussia was also the German Emperor (Kaiser).  In the aftermath of World War I, Prussia had a revolution that resulted in the replacement of the monarchy with a republic. Wilhelm II, German Emperor, King of Prussia abdicated on November 9, 1918. On November 10, 1918, Wilhelm Hohenzollern crossed the border by train and went into exile in the Netherlands, never to return to Germany.

The Kingdom of Prussia had territory that today is part of Belgium, the Czech Republic, Denmark, Germany, Lithuania, the Netherlands, Poland, Russia, and Switzerland. All or parts of the following states of today’s Germany were part of the Kingdom of Prussia: Brandenburg, Hesse, Lower Saxony, North Rhine-Westphalia, Saarland, Saxony-Anhalt, and Schleswig-Holstein.

The Kingdom of Prussia within the German Empire between 1871 and 1918; Credit – By Milenioscuro – Own work based on: File:Deutsches Reich (Karte) Preußen.svg, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=35265381

Below is an indexed listing with links to the biographical articles about the Prussian Royal Family at Unofficial Royalty. If it says “Notable Issue” before a name, that means not all of the children for the parent of that person are listed.  Also listed below are links to Prussian Royal Wedding articles, Prussian Miscellaneous Articles, and Prussian Content Areas.

House of Hohenzollern – Margraves of Brandenburg, Dukes of Prussia, Electors of Brandenburg, Kings of Prussia (1415-1918)

Kingdom of Prussia (1701–1918)

Family of Friedrich I, King in Prussia

Family of Friedrich Wilhelm I, King in Prussia

Family of Friedrich II, King of Prussia

Family of Friedrich Wilhelm II, King of Prussia

Family of Friedrich Wilhelm III, King of Prussia

Family of Friedrich Wilhelm IV, King of Prussia

Family of Wilhelm I, German Emperor, King of Prussia

Family of Friedrich III, German Emperor, King of Prussia

Family of Wilhelm II, German Emperor, King of Prussia

Pretenders to the Throne

Other Prussian Royals

Prussian Royal Weddings

Prussian Miscellaneous Articles

Prussian Content Areas