House of Schleswig-Holstein-Sonderburg-Augustenburg

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House of Schleswig-Holstein-Sonderburg-Augustenburg
Ernest Günther
Titles
  • Duke of Schleswig-Holstein-Sonderburg-Augustenburg
  • Duke of Schleswig-Holstein
  • Crown Prince of Sweden
Dissolution27 April 1931

The House of Schleswig-Holstein-Sonderburg-Augustenburg (Danish: Slesvig-Holsten-Sønderborg-Augustenborg) was a branch of the dukes of Schleswig-Holstein-Sonderburg of the House of Oldenburg. The line descended from Alexander, Duke of Schleswig-Holstein-Sonderburg. Like all of the secondary lines from the Sonderburg branch, the heads of the House of Schleswig-Holstein-Sonderburg-Augustenburg were first known as Dukes of Schleswig-Holstein and Dukes of Sonderburg. The family took its name from its ancestral home, Augustenborg Palace in Augustenborg, Denmark.

History

Duke Ernst Günther I, first Duke of Augustenburg (1609-1689).
Auguste, the first Duchess of Augustenburg
(1633-1701).

The branch originated from

John the Younger (1545–1622), the first duke, who was a son of King Christian III of Denmark
.

Ernest Günther had a castle built in the years after 1651, which received the name of Augustenburg in honor of his wife,

Dukes of Schleswig-Holstein as a daughter of Philip (1584–1663), Duke of Glücksburg. As that castle became the chief seat of their line, the family eventually used the name of Augustenborg as its branch name. As they were agnates
of the ducal house, the title of duke belonged to every one of them (as is the Germanic custom).

The Dukes of Augustenburg were not sovereign rulers—they held their lands in

—who were the Oldenburg Kings of Denmark.

Later, a Danish king made the head of that line specifically Duke of Augustenburg. In the late 18th century, since 1764, the branch of Schleswig-Holsten-Sønderborg-Augustenburg was genealogically the next senior branch immediately after the main line of Danish kings. King

Hereditary Prince Christian of Augustenburg
.

In 1764,

Sønderborg castle
, the seat of that elder Schleswig-Holstein branch, passed upon its owners' extinction into the hands of the Duke of Augustenburg, but against expectations it did not become a residence (they remained at Augustenborg). Instead it was rented out as a warehouse. The penultimate Duke of Augustenburg, also named Ernst Günther, allowed Sønderborg County Museum to move into a part of the castle in 1920. The next year the Danish state bought the castle from the Duke.

In 1810, a younger scion of the family,

Charles XIII of Sweden
. An Augustenburg dynasty on a royal throne was however not to be, as Prince Christian August died a couple of months after his arrival in Sweden.

In the early 19th century, the Danish royal line started to go extinct. The Duke of Augustenburg was the next male-line heir to the royal house, though not descended in male line from

Frederick VIII of Schleswig-Holstein in 1864, upon the final extinction of the senior branch of the Danish kings. His daughter, Augusta Victoria of Schleswig-Holstein, became German Empress as consort of Wilhelm II
.

The ducal line died out in 1931. In November 1920, its penultimate head had adopted Prince Johann Georg of Schleswig-Holstein-Sonderburg-Glücksburg and his sister Princess Marie Luise, children of Prince Albrecht of Schleswig-Holstein-Sonderburg-Glücksburg.

Schleswig-Holstein-Sonderburg-Glücksburg
and in Danish as Slesvig-Holsten-Sønderborg-Lyksborg.

List of Dukes

Dukes of Schleswig-Holstein-Sonderburg-Augustenburg
Dukes of Schleswig-Holstein
  • Frederik VIII August
    (1863–1880), son
Frederick proclaimed himself Duke of Schleswig-Holstein in 1863, but did not obtain sovereign possession.

Like the kings of the earlier Oldenburg line, of which the House of Glücksburg is a

Margrethe II of Denmark
abandoned this tradition upon ascending the Danish throne in 1972.

References

External links