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Principality of Calenberg

Principality of Calenberg
Fürstentum Calenberg
State of the Holy Roman Empire


Coat of arms

Caspar Merian: Schloss und Ampt Calenberg, 1654
Capital Hanover (from 1636)
Government Principality
Historical era Middle Ages
Early modern time
 •  William the Victorious
    Prince of Calenberg
 •  Split off Brunswick-Wolfenbüttel 1494
 •  Incorporated Göttingen 1495
 •  Joined
    Lower Saxon Circle
 •  Line extinct, fell back to
 •  To Lüneburg-Celle 1635
 •  Merged with
    to Hanover
 •  Kingdom of Hanover 1814

The Principality of Calenberg was a dynastic division of the Principality of Lüneburg to form the state of Hanover.


  • Territory 1
  • History 2
    • Origins and foundation of Calenberg Castle 2.1
    • Welf inheritance divisions 2.2
    • Unification with Göttingen 2.3
    • Under Eric I, Elisabeth and Eric II 2.4
    • Thirty Years' War 2.5
    • Elevation to an electorate 2.6
  • Economic and social history 3
  • Princes of Calenberg 4
    • House of Calenberg 4.1
    • House of Wolfenbüttel 4.2
    • House of Lüneburg 4.3
  • References 5
  • Sources 6


Coat of arms of the Calenberg-Grubenhagensche Landschaft on a building in Göttingen

When Duke Eric I of Brunswick-Lüneburg chose the Principality of Calenberg as his part of the inheritance in 1495, he described it as "the land between the River Leine and the Deister". This geographical description, however, was never totally correct. In fact, the Principality extended west of the Leine from Schulenburg as far as Neustadt am Rübenberge in the north and thus much further north than the foothills of the Deister. To the south-west the territory stretched as far as Hamelin on the Weser, well beyond the Deister.

The city of Thirty Years War, chose the city as his Residenz in 1636 could Hanover also be viewed as part of the Principality of Calenberg.

Because of the link that had existed since 1463 between the principalities of Calenberg and Göttingen, the latter was also sometimes referred to as Calenberg. Today the term Calenberg Land is usually only used for the region between Hanover and the Deister.


Origins and foundation of Calenberg Castle

The remains of Calenberg Castle. Here, the battery tower at the main entrance

Originally the territory belonged to the Duchy of Saxony but in 1180, after the imperial ban had been imposed on the Welf prince, Henry the Lion, he lost his ducal lands in Saxony and Bavaria. However, in 1235, Henry's grandson, Otto the Child, was promoted to the rank of prince as a result of the reconciliation between the Houses of Hohenstaufen and Welf and was given the allodial estates of the family claimed by them in the area between Lüneburg and Brunswick as the new and independent Duchy of Brunswick-Lüneburg. In the region west of Hanover, the Welfs had but few allodial possessions and so that area was disputed between the House of Welf and the bishops of Hildesheim and Minden. It was largely ruled by comital dynasties, such as the counts of Wölpe in the northwest, the counts of Hallermund in the southwest and the counts of Rhoden in the west and in Hanover.

In 1292 Duke Otto the Strict from the Lüneburg line of the Welfs subjugated the region. Earlier, he had yielded to the Bishop of Hildesheim and accepted the city of Hanover as his fief. However, he shook off his allegiance and founded Calenberg Castle, just 13 km west of Hildesheim, in a countermove in order to further reduce the power of the Bishop of Hildesheim in the Hanover area.

Administratively, this area was initially still called the Vogtei of Lauenrode, after Lauenrode Castle on the outskirts of Hanover, from where, the Welfs ruled the territory. With the extinction of the Lüneburg line of the Welfs, the Lüneburg War of Succession, broke out (1371–88) during which Lauenrode Castle was stormed by the citizens of Hanover and destroyed. The Vogtei was then moved to Calenberg Castle.

Welf inheritance divisions

The Welf dukes did not inherit their land by primogeniture and this resulted in the late Middle Ages in numerous Welf estates and a great fragmentation of Welf territory. In 1400 the Vogtei of Calenberg went to the Wolfenbüttel line of the Welfs. In 1408 and 1409 they were able to purchase the county of Everstein and the lordship of Homburg after the extinction of their reigning families. These were added to the Vogtei of Calenberg. In a further Welf inheritance in 1432 - the ninth according to Gudrun Pischke - the area was divided again by the Brunswick dukes William the Elder and Henry who had hitherto ruled jointly in Wolfenbüttel.[1] While Henry was given the territory of Lüneburg, William was compensated with the newly created Principality of Calenberg. At that time, the lordship given to William had no name. It consisted of the rights formerly owned by the Principality of Lüneburg between the Deister and the River Leine, as well as the former County of Wölpe, the lordship of County of Hallermundand the dominions of Homburg and Everstein.

Because the Welf princes all carried the title of Duke of Brunswick and Lüneburg and the territories they ruled were principalities within the Duchy of Brunswick-Lüneburg, their dominions were named after the main castle or town. William spent most of his time at Calenberg Castle from where he administered the territory. As a result it is probable that the name of the Principality of Calenberg emerged during this time.

Unification with Göttingen

William succeeded in 1442 and finally in 1463 in taking over the Principality of Göttingen. Although unification with Calenberg initially came about purely by chance, it lasted nonetheless. In order to distinguish the two areas which were physically separated by the foothills of the uplands in the Leine valley, Calenberg in the north was usually referred to as Unterwald ("Lower Forest"), whilst the Göttingen region was called the Oberwald ("Upper Forest").

In 1473 William also inherited the Principality of Wolfenbüttel from his brother who had no sons, but ceded sovereignty over Calenberg to his sons William the Younger and Frederick III, known as "the Restless" or "Turbulentus".

After the death of William I in 1482 both sons shared the regency. In an agreement dated 1 August 1483, however, they split the rights of use (Mutschierung). The younger son, Frederick the Restless, was awarded the rights of use over Calenberg and Göttingen, and his brother William II was awarded the right to use Wolfenbüttel. William deposed his brother Frederick in 1484/85 and declared him insane. The reasons for his removal are debated; perhaps by his participation in many armed conflicts, Frederick was seen to pose a threat to Welf rule in Calenberg and Göttingen. So William II succeeded - albeit only briefly - in re-uniting the entire territory of the principalities of Calenberg, Brunswick-Göttingen and Brunswick-Wolfenbüttel. After Frederick's death in 1495, William divided the state again and left the Principality of Brunswick-Wolfenbüttel to his elder son Henry.

Under Eric I, Elisabeth and Eric II

Eric I with his second wife, Elisabeth ca. 1530

The younger son, Eric I received Calenberg and Göttingen and thus founded the Calenberg line of the House of Brunswick-Lüneburg. In the new territory so formed, the name Calenberg was increasingly used for both parts of the state. For the period under Eric I and his son, Eric II, however, the name "Principality of Calenberg-Göttingen" was also used a lot. The principality had separate parliamentary Estates and separate councils for each part. The chancellery for Unterwald was established in Neustadt on Rübenberge and that for Oberwald in Münden. There were also separate residences, lordly castles or manor houses and palaces in each town as well as separate repositories for their records.

Under Eric I, Calenberg Castle was expanded into a strong fortress. Another heavily fortified castle, which he had built, was the Erichsburg near Dassel on which construction began in 1527. In the Hildesheim Diocesan Feud in 1519 he was initially defeated militarily in the Battle of Soltau. Diplomatically, however, he was able to win a ruling from the Emperor Charles V that saw a large part of the Bishopric of Hildesheim added to his domain.

Eric I was hostile to the emerging Protestant Reformation. His second wife, Elisabeth of Brandenburg, however, whom he married in 1525, switched over to the new doctrine in 1535 and promoted it at the court, which then resided at Münden. After Eric's death in 1540 she took over the government for their underage son, Eric II, and implemented the Reformation in the Principality with the state superintendent Antonius Corvinus she had appointed. Eric II, however, converted to Roman Catholicism in 1547 even though he was raised as an Evangelical by his mother. He was not able to reverse the Reformation in the Principality however. His power in the principality was already very weak. He spent most of his time as a mercenary leader abroad, and was financially dependent on the towns. In 1553 he had to secure the financial aid of his towns by approving evangelical preaching. From 1574 he had Neustadt am Rübenberge developed as a fortified town and built Landestrost Castle within its walls as a Renaissance chateau, integrated into a bastion fortress based on the Italian model.

In 1582 when the counts of Hoya died out, the larger part of the county went to Calenberg. In 1584 Calenberg also acquired the Diepholz.

Thirty Years' War

After Eric's death in 1584 Calenberg-Göttingen was again ruled by the Wolfenbüttel line of the Welfs. In the Thirty Years' War the brother of Duke Frederick Ulrich, "mad" Christian, brought the war to the state. After Danish troops under King Christian IV, who was then commander of the Lower Saxon Circle, was defeated by the general of the Catholic League, Tilly in the Battle of Lutter, Tilly occupied the whole principality in 1626. Only the cities of Brunswick and Hanover could not be captured.

When Duke Frederick Ulrich died childless in 1634 the Wolfenbüttel line of the Middle House of Brunswick ended with him. In 1635 Duke Augustus the Elder from the Middle House of Lüneburg received the Principality of Calenberg-Göttingen.[2] After his death in 1636 his younger brother John Frederick and Ernest Augustus then ruled the Principality of Calenberg-Göttingen in succession.

Elevation to an electorate

In 1665 the Ernest Augustus, who ruled from 1679, carried on the successful policies of his father and his brothers. In 1689 the Calenbergs also inherited Saxe-Lauenburg. Ernest Augustus switched to the side of the Emperor and introduced primogeniture, contrary to the direction of his father. In 1692 for his services to the Emperor, Ernest Augustus was rewarded after a long struggle with the title of the ninth electorate. Officially he was now the Elector of Brunswick-Lüneburg and his government was called the "Electoral Brunswick-Lüneburg Government".[3] In 1705 it was enhanced further by the inheritance of the Principality of Lüneburg, whereby all the estates of the Welfs, apart from the Principality of Brunswick-Wolfenbüttel, became united under the line also known as the House of Hanover from which the British royal throne are descended.

Economic and social history

The Principality of Calenberg was initially a rather insignificant territory and Welf lordship developed here quite late. By the reign of George of Calenberg in 1636, the principality had experienced 140 years of almost continuously poor government that cared little about the state. In the Middle Ages and the Renaissance the cultural centres lay outside Calenberg in the towns of Brunswick, Hildesheim and Lüneburg. New centres were created at the residences of Wolfenbüttel and Celle. Even the city of Hanover was not governed by the Calenberg princes until 1636 . The other towns remained unimportant.

Only after the reign of George of Calenberg and its subsequent elevation to the electorate did the former Principality of Calenberg become the nucleus of the what later became the German state of Lower Saxony.

Industrialization had already begun during the liberal French period. The industrialist, Johann Egestorff (1772–1834), used the economic opportunities of the years from 1803 to 1813 and was able to purchase limestone quarries on the hill of the Lindener Berg, west of Hanover. To burn the lime he had coal mined in the Deister hills. His son, Georg Egestorff, started an iron foundry and engineering company. The Calenberg village of Linden then developed into an industrial town.

Princes of Calenberg

House of Calenberg

  • Eric I 1494-1540, grandson, Göttingen annexed in 1495, remained part of the Calenberg lands thereafter
  • Eric II 1545-1584, son

On Eric II's death, Calenberg was acquired by the descendents of Henry IV who ruled in Wolfenbüttel:

House of Wolfenbüttel

Upon Frederick Ulrich's death, his lands were divided between the houses of Lüneburg and Dannenberg, the former gaining Calenberg and the latter Wolfenbüttel.

House of Lüneburg


  1. ^ The House of Brunswick at Leibnitiana. Retrieved on 25 Jun 2010.
  2. ^ Georg (George) of Calenberg at Leibnitiana. Retrieved on 25 Jun 2010.
  3. ^ "the electors themselves placed great value on the title "Brunswick-Lüneburg", a description which is almost always used in the official titles and documents of the electorate, Niemeyer / Ortenburg 1976: 7. Unofficially, it was also referred to as the Electorate of Hanover or Kurhannover


  • Güßfeld, Ludwig; Erben, Homann (1786/2002). Die Fürstenthümer Grubenhagen, Calenberg, Wolfenbüttel und Blankenburg 1786. Verlag Rockstuhl, Bad Langensalza, Reprint 1786/2002, ISBN 3-936030-51-0 (Historic map)
  • Historisches Museum am Hohen Ufer, Hannover, Burgstraße (ed.) (1979). Calenberg – Von der Burg zum Fürstentum. Hanover
  • Hauptmeyer, Carl-Hans (1983) Calenberg – Geschichte und Gesellschaft einer Landschaft. Hanover
  • Havemann, Wilhelm (1974/75). Geschichte der Lande Braunschweig und Lüneburg. 3 volumes. Reprint. Hirschheydt, Hanover 1974/75, ISBN 3-7777-0843-7 (Original edition: Verlag der Dietrich'schen Buchhandlung, Göttingen 1853-1857)
  • Kalthof, Edgar (1982). Geschichte des südniedersächsischen Fürstentums Göttingen und des Landes Calenberg im Fürstentum Calenberg 1285–1584, Verlag Otto Zander, Herzberg (Harz)-Pöhlde, ISBN 3-923336-03-9
  • Patze, Hans (Begr.) (1977). Geschichte Niedersachsen. 7 volumes. Hahnsche Buchhandlung, Hanover (Veröffentlichungen der Historischen Kommission für Niedersachsen und Bremen, 36) (Overview by the publishers)
  • Pischke, Gudrun (1987). Die Landesteilungen der Welfen im Mittelalter. Lax, Hildesheim, ISBN 3-7848-3654-2

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