Principality of Anhalt

Until his death in 1123, Count Otto had Anhalt Castle built in the Harz mountains near Harzgerode and appears to have been among the first to assume the title of a "Count of Anhalt". He was the father of Albert the Bear, who temporarily was appointed Margrave of the Saxon Eastern March (or March of Lusatia) by the Saxon duke Lothair of Supplinburg and struggled for the ducal title himself. Albert could not prevail against the Welf duke Henry the Lion, nevertheless he conquered the eastern territories of the former Northern March, which had been lost in the 983 Great Slav Rising, where he established the Margraviate of Brandenburg in 1157. When he died in 1170, his younger son Count Bernhard inherited the Ascanian home territories around Anhalt Castle and after the deposition of Henry the Lion by Emperor Frederick Barbarossa finally became Duke of Saxony in 1180. However, he effectively only ruled over the Eastphalian territories, while the Westphalian and Engern parts of Saxony fell under the control of the Prince-Archbishops of Cologne.

The County of Anhalt finally arose upon the death of Duke Bernhard in 1212, when his sons divided their heritage. The younger Albert I became Duke of Saxony, while the elder Henry I went on to rule the Ascanian lands, now definitely separated from Saxony, as Count of Anhalt. In 1218, Henry I assumed the title of a prince and thereby was the real founder of the princely House of Anhalt.

Der Herzoge von Anhalte., Codex Manesse, c. 1305/15

On Henry's death in 1252, his three sons partitioned the principality and founded, respectively, the lines of Aschersleben, Bernburg and Zerbst. The family ruling in Aschersleben became extinct in 1315, and this district was subsequently incorporated in the neighboring Bishopric of Halberstadt, thus dividing the territory of Anhalt-Bernburg in two separate pieces. The last prince of the original line of Anhalt-Bernburg died in 1468 and his lands were inherited by the princes of the sole remaining line, that of Anhalt-Zerbst. The territory belonging to this branch of the family had been divided in 1396, and after the acquisition of Bernburg Prince George I made a further partition of Zerbst (Zerbst and Dessau). Early in the 16th century, however, owing to the death or abdication of several princes, the family had become narrowed down to the two branches of Anhalt-Köthen and Anhalt-Dessau (issued both from Anhalt-Dessau in 1471).

Wolfgang of Anhalt, called the Confessor, who became prince of Anhalt-Köthen in 1508, was the second ruler in the world to introduce the Reformation to his country. He was a co-signer of the Augsburg Confession in 1530, and after the Battle of Mühlberg in 1547 was placed under Imperial ban and deprived of his lands by Emperor Charles V. After the peace of Passau in 1552 he bought back his principality, but as he was childless he surrendered it in 1562 to his kinsmen the princes of Anhalt-Dessau. Ernest I, Prince of Anhalt-Dessau (d. 1516) left three sons, John V, George III, and Joachim, who ruled their lands together for many years, and who favoured the Lutheran doctrine, which thus became dominant in Anhalt. About 1546 the three brothers divided their principality and founded the lines of Zerbst, Plötzkau and Dessau. This division, however, was only temporary, as the acquisition of Köthen, and a series of deaths among the ruling princes, enabled Joachim Ernest, a son of John V, to unite the whole of Anhalt under his rule in 1570.

The first united principality of Anhalt was short-lived, and in 1603 it was split up into the mini states of Anhalt-Dessau, Anhalt-Bernburg, Anhalt-Köthen, Anhalt-Zerbst and Anhalt-Plötzkau.

Joachim Ernest died in 1586, and his five sons ruled the land in common until 1603, when owing to the lack of primogeniture, Anhalt was again divided, and the lines of Dessau, Bernburg, Plötzkau, Zerbst and Köthen were re-founded. The principality was ravaged during the Thirty Years' War, and in the earlier part of this struggle Christian I of Anhalt-Bernburg took an important part. In 1635 an arrangement was made by the various princes of Anhalt, which gave a certain authority to the eldest member of the family, who was thus able to represent the principality as a whole. This proceeding was probably due to the necessity of maintaining an appearance of unity in view of the disturbed state of European politics.

Anhalt partitions 1747-1793

In 1665, the branch of Anhalt-Köthen became extinct, and according to a family compact this district was inherited by Lebrecht, Prince of Anhalt-Plötzkau, who surrendered Plötzkau to Bernburg, and took the title of prince of Anhalt-Köthen. In the same year the princes of Anhalt decided that if any branch of the family became extinct its lands should be equally divided between the remaining branches. This arrangement was carried out after the death of Frederick Augustus, Prince of Anhalt-Zerbst in 1793, and Zerbst was divided between the three remaining princes. During these years the policy of the different princes was marked, perhaps intentionally, by considerable uniformity. Once or twice Calvinism was favoured by a prince, but in general the house was loyal to the doctrines of Martin Luther. The growth of Prussia provided Anhalt with a formidable neighbour, and the long-delayed establishment of primogeniture by all branches of the family prevented further divisions of the principality.

Coat of arms of the 19th-century Duchy of Anhalt.

In 1806, Napoleon elevated the remaining states of Anhalt-Bernburg, Anhalt-Dessau and Anhalt-Köthen to duchies; in the meantime, Anhalt-Plötzkau and Anhalt-Zerbst had ceased to exist. These duchies were united again in 1863, due to the extinction of the Köthen and Bernburg lines. The new duchy consisted of two large portions, Eastern and Western Anhalt, separated by the interposition of a part of the Prussian Province of Saxony and of five exclaves surrounded by Prussian territory: Alsleben, Mühlingen, Dornburg, Gödnitz and Tilkerode-Abberode. The eastern and larger portion of the duchy was enclosed by the Prussian government district of Potsdam (in the Prussian province of Brandenburg) and by Magdeburg and Merseburg, belonging to the Prussian province of Saxony. The western or smaller portion, the so-called Upper Duchy or Ballenstedt, was also enclosed by the two latter districts as well as by the Duchy of Brunswick-Lüneburg.

When a united state, the capital of Anhalt was Dessau.

Along with the fall of all German monarchies, the Duchy of Anhalt came to an end in 1918–19 during the revolution that followed the end of World War I. It was replaced by the Free State of Anhalt within the Weimar Republic. After World War II, the Free State was united with the Prussian parts of Saxony to form Saxony-Anhalt. Subsequently, Saxony-Anhalt was dissolved in 1952, but re-established prior to the German reunification in 1990, since when it has been one of the sixteen (Bundes)länder (states) of Germany.

The duchy, by virtue of a fundamental law, proclaimed on September 17, 1859 and subsequently modified by various decrees, was a constitutional monarchy. The duke, who bore the title of "Highness", wielded the executive power while sharing the legislation with the estates. The diet (Landtag) was composed of thirty-six members, of whom two were appointed by the duke, eight were representatives of landowners paying the highest taxes, two of the highest assessed members of the commercial and manufacturing classes, fourteen of the other electors of the towns and ten of the rural districts. The representatives were chosen for six years by indirect vote and must have completed their twenty-fifth year. The duke governed through a minister of state, who was the praeses of all the departments — finance, home affairs, education, public worship and statistics.

• Duke Joachim Ernst 1918–1947
• Prince Friedrich 1947–1963
• Prince Eduard 1963–present