The monarchs of Prussia were members of the

House of Hohenzollern The House of Hohenzollern (, also , german: Haus Hohenzollern, , ro, Casa de Hohenzollern) is a German royal (and from 1871 to 1918, imperial) dynasty whose members were variously princes, Prince-elector, electors, kings and emperors of Hohenzol ...

who were the hereditary rulers of the former German state of

Prussia Prussia, , Old Prussian: ''Prūsa'' or ''Prūsija'' was a German state on the southeast coast of the Baltic Sea. It formed the German Empire under Prussian rule when it united the German states in 1871. It was ''de facto'' dissolved by an em ...

from its founding in 1525 as the

Duchy of Prussia The Duchy of Prussia (german: Herzogtum Preußen, pl, Księstwo Pruskie, lt, Prūsijos kunigaikštystė) or Ducal Prussia (german: Herzogliches Preußen, link=no; pl, Prusy Książęce, link=no) was a duchy in the Prussia (region), region of P ...

. The Duchy had evolved out of the

Teutonic Order The Order of Brothers of the German House of Saint Mary in Jerusalem, commonly known as the Teutonic Order, is a Catholic religious institution founded as a military society in Acre, Kingdom of Jerusalem. It was formed to aid Christians on ...

, a

Roman Catholic Roman or Romans most often refers to: *Rome, the capital city of Italy *Ancient Rome, Roman civilization from 8th century BC to 5th century AD *Roman people, the people of ancient Rome *'' Epistle to the Romans'', shortened to ''Romans'', a lette ...

crusader state The Crusader States, also known as Outremer, were four Catholic realms in the Middle East that lasted from 1098 to 1291. These feudal polities were created by the Latin Catholic leaders of the First Crusade through conquest and political in ...

and

theocracy Theocracy is a form of government in which one or more deity, deities are recognized as supreme ruling authorities, giving divine guidance to human intermediaries who manage the government's daily affairs. Etymology The word theocracy origina ...

located along the eastern coast of the

Baltic Sea The Baltic Sea is an arm of the Atlantic Ocean that is enclosed by Denmark, Estonia, Finland, Germany, Latvia, Lithuania, Poland, Russia, Sweden and the North and Central European Plain. The sea stretches from 53°N to 66°N latitude and from ...

. The Teutonic Knights were under the leadership of a Grand Master, the last of whom,

Albert Albert may refer to: Companies * Albert (supermarket), a supermarket chain in the Czech Republic * Albert Heijn, a supermarket chain in the Netherlands * Albert Market, a street market in The Gambia * Albert Productions, a record label * Alber ...

, converted to Protestantism and secularized the lands, which then became the Duchy of Prussia. The Duchy was initially a vassal of the

Kingdom of Poland The Kingdom of Poland ( pl, Królestwo Polskie; Latin: ''Regnum Poloniae'') was a state in Central Europe. It may refer to: Historical political entities *Kingdom of Poland, a kingdom existing from 1025 to 1031 *Kingdom of Poland, a kingdom exist ...

, as a result of the terms of the

Prussian Homage The Prussian Homage or Prussian Tribute (german: Preußische Huldigung; pl, hołd pruski) was the formal investment of Albert of Prussia as duke of the Polish fief of Ducal Prussia. In the aftermath of the armistice ending the Polish-Teuton ...

whereby Albert was granted the Duchy as part of the terms of peace following the Prussian War. When the main line of Prussian Hohenzollerns died out in 1618, the Duchy passed to a different branch of the family, who also reigned as

Electors of Brandenburg This article lists the Margraves and Electors of Brandenburg during the period of time that Brandenburg was a constituent state of the Holy Roman Empire. The Mark, or ''March'', of Brandenburg was one of the primary constituent states of the Hol ...

in the Holy Roman Empire. While still nominally two different territories, Prussia under the suzerainty of Poland and Brandenburg under the suzerainty of the

Holy Roman Empire The Holy Roman Empire was a Polity, political entity in Western Europe, Western, Central Europe, Central, and Southern Europe that developed during the Early Middle Ages and continued until its Dissolution of the Holy Roman Empire, dissolution i ...

, the two states are known together historiographically as Brandenburg-Prussia. Following the

third Northern War The Great Northern War (1700–1721) was a conflict in which a coalition led by the Tsardom of Russia successfully contested the supremacy of the Swedish Empire in Northern, Central and Eastern Europe. The initial leaders of the anti-Swed ...

, a series of treaties freed the Duchy of Prussia from vassalage to any other state, making it a fully sovereign Duchy in its own right. This complex situation (where the Hohenzollern ruler of the independent Duchy of Prussia was also a subject of the Holy Roman Emperor as Elector of Brandenburg) laid the eventual groundwork for the establishment of the

Kingdom of Prussia The Kingdom of Prussia (german: Königreich Preußen, ) was a German kingdom that constituted the state of Prussia between 1701 and 1918.Marriott, J. A. R., and Charles Grant Robertson. ''The Evolution of Prussia, the Making of an Empire''. Re ...

in 1701. For diplomatic reasons, the rulers of Prussia called themselves

King in Prussia King ''in'' Prussia (German: ''König in Preußen'') was a title used by the Prussian kings (also in personal union Electors of Brandenburg) from 1701 to 1772. Subsequently, they used the title King ''of'' Prussia (''König von Preußen''). Th ...

from 1701 to 1772. They still nominally owed fealty to the Emperor as Electors of Brandenburg, so the "King in Prussia" title (as opposed to "King of Prussia") avoided offending the Emperor. Additionally, calling themselves "King ''of'' Prussia" implied sovereignty over the entire Prussian region, parts of which were still part of Poland. As the Prussian state grew through several wars and diplomatic moves throughout the 18th century, it became apparent that Prussia had become a Great Power in its own right. By 1772, the pretense was dropped, and the style "King of Prussia" was adopted. The Prussian kings continued to use the title "Elector of Brandenburg" until the end of the Holy Roman Empire in 1806, reflecting the

legal fiction A legal fiction is a fact assumed or created by courts, which is then used in order to help reach a decision or to apply a legal rule. The concept is used almost exclusively in common law jurisdictions, particularly in England and Wales. Deve ...

that their domains within the empire were still under the ultimate overlordship of the Emperor. Legally, the Hohenzollerns ruled Brandenburg in

personal union A personal union is the combination of two or more states that have the same monarch while their boundaries, laws, and interests remain distinct. A real union, by contrast, would involve the constituent states being to some extent interlink ...

with their Prussian kingdom, but in practice they treated their domains as a single unit. The Hohenzollerns gained ''de jure'' sovereignty over Brandenburg when the empire dissolved in 1806, and Brandenburg was formally merged into Prussia. In 1871, in the aftermath of the Franco-Prussian War, the

German Empire The German Empire (),Herbert Tuttle wrote in September 1881 that the term "Reich" does not literally connote an empire as has been commonly assumed by English-speaking people. The term literally denotes an empire – particularly a hereditary ...

was formed, and the King of Prussia,

Wilhelm I William I or Wilhelm I (german: Wilhelm Friedrich Ludwig; 22 March 1797 – 9 March 1888) was King of Prussia from 2 January 1861 and German Emperor from 18 January 1871 until his death in 1888. A member of the House of Hohenzollern, he was the ...

was crowned

German Emperor The German Emperor (german: Deutscher Kaiser, ) was the official title of the head of state and hereditary ruler of the German Empire. A specifically chosen term, it was introduced with the 1 January 1871 constitution and lasted until the offi ...

. From that point forward, though the Kingdom of Prussia retained its status as a constituent state of the empire (by far the largest and most powerful), all subsequent Kings of Prussia also served as German Emperor, and that title took precedence.

Duchy of Prussia (1525–1701)

Kingdom of Prussia (1701–1918)

Timeline

Legacy to the Throne of Prussia (1918–present)

* William II (9 November 1918 – 4 June 1941) * Frederick William (4 June 1941 – 20 July 1951) * Louis Ferdinand (20 July 1951 – 26 September 1994) * George Frederick (26 September 1994 –present)

Family tree

References

Bibliography

* . *

External links

House of Hohenzollern
{{Orders and decorations of the Kingdom of Prussia *

Dukes of Prussia

Monarchs A monarch is a head of stateWebster's II New College DictionarMonarch Houghton Mifflin. Boston. 2001. p. 707. for life or until abdication, and therefore the head of state of a monarchy. A monarch may exercise the highest authority and power in ...