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Duke Of Schleswig-holstein-sonderburg-augustenburg




Duke of Augustenborg was a title conferred by the King Of Denmark to the head of a certain younger branch of the House Of Oldenburg ( Danish , Oldenborg), the branch known in Danish as '''Slesvig-Holsten-Sønderborg-Augustenborg''', and in German as '''Schleswig-Holstein-Sonderburg-Augustenburg'''.


HISTORY


The branch originated from Ernest Gunther, a member of the ducal House of Schleswig-Holstein (its branch of Sönderburg ) and a cadet of the royal house of Denmark.

He had a castle built in the years after 1651, which received the name Augustenborg in honor of his wife, Auguste, herself also from a branch of Dukes of Schleswig-Holstein. As that castle became the chief seat of their line, the line eventually used the name Augustenborg as its branch name. As they were Agnates of the ducal house, the title of Duke belonged to everyone of them (as is the Germanic custom).

Later, a Danish king made the head of that line specifically Duke of Augustenborg. In the late 18th century, the branch of Schleswig-Holstein-Sönderburg-Augustenburg was genealogically the next senior immediately after the main line of Danish kings. King Frederick VI Of Denmark forced his only sister Louise Auguste to marry the then Duke of Augustenborg.

In 1764 Sønderborg Castle passed into the hands of the Duke of Augustenborg, but against expectations it did not became a residence. Instead it was rented out as a warehouse. The last Duke of Augustenborg, 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 the 19th century the Danish royal line began 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 III Of Denmark And Norway . This made the duke a player in the convoluted Schleswig-Holstein Question , as well in the question of Danish succession. Frederik August of Augustenborg attempted to proclaim himself as Duke Frederick VIII Of Schleswig-Holstein .

The Dukes of Augustenborg were not sovereign rulers— they held their lands in Fief to the sovereign Dukes of Schleswig and Holstein - the Kings of Denmark.

The ducal line died out in the 20th century. After its extinction, the senior status went to the line of Dukes of Glucksburg , heads of another line, the line known in German as Schleswig-Holstein-Sönderburg-Glücksburg and in Danish as '''Slesvig-Holsten-Sønderborg-Lyksborg'''.


DUKES OF SCHLESWIG-HOLSTEIN-SONDERBURG-AUGSTENBURG


His son had proclaimed himself Duke of Schleswig-Holstein in 1863, and later Dukes of the line used this higher title.


DUKES OF SCHLESWIG-HOLSTEIN, 1863-1931


On the death of Duke Albert the Augustenburg line became extinct, and the Duke of Glücksburg became Duke of Schleswig-Holstein (see above).