Schleswig-Holstein-Sonderburg was the name of a branch line from the House of Oldenburg and at the same time the name for its territory. Schleswig-Holstein-Sonderburg was not a territorial duchy, but a personal part-duchy within the duchies of Schleswig and Holstein . It was distributed over several individual domains, which were mainly in the south-east and north of Schleswig-Holstein and partly in the area of today's Denmark . After various inheritance divisions, it split into numerous small territories, which in the 18th century became part of the entire Danish state .
The ducal family was related to the House of Schleswig-Holstein-Gottorf , both of which belonged to the House of Oldenburg. The branch of the family was founded in the 16th century by Duke Johann , a brother of the Danish King Friedrich II. Johann, known as the Younger, received from his brother the areas of Sonderburg , Norburg , Ærø , Plön and Ahrensbök and their offices. Johann administered the new duchy as a so-called separate lord , i.e. without the consent of the estates .
Disintegration into various subsidiary lines
After Duke Johann's death in 1622, the duchy was divided among the sons entitled to inherit, so that several branch lines emerged from the house of Schleswig-Holstein-Sonderburg. The names of the individual lines were supplemented by the respective place of residence.
Some of the newly created partial duchies had only a few square kilometers of land and their masters were only titular dukes . The sons of Duke Alexander - a son of Duke Johann - received or partly acquired territories outside Schleswig-Holstein to provide for them. Some of the new lines only existed for a short time and fell through inheritance or bankruptcy to the other lines or to the Danish royal family.
- The Schleswig-Holstein-Sonderburg house was continued by Duke Alexander , who resided in the Sonderburg Castle . After bankruptcy in 1667, the Sonderburger portion of the duchy went to the Danish king. Among other things, the line emerged
- The Schleswig-Holstein-Sonderburg-Franzhagen line with its seat at Franzhagen Castle near Schulendorf , founded by Duke Johann Christian , expired in 1709.
- The so-called Catholic line Schleswig-Holstein-Sonderburg, founded by Duke Alexander Heinrich, expired in 1708.
- The Schleswig-Holstein-Sonderburg-Wiesenburg line with its seat at Schloss Wiesenburg in Saxony, founded by Duke Philipp Ludwig , expired in 1744.
- The Schleswig-Holstein-Sonderburg-Augustenburg line , founded by Duke Ernst Günther, who resides in Augustenborg Castle . The most famous member was Auguste Viktoria , the last German empress. The line expired in 1931.
- The Schleswig-Holstein-Sonderburg-Beck line , founded by Duke August Philipp . This emerged later
- The younger line of the House of Schleswig-Holstein-Sonderburg-Glücksburg , today mostly called House of Glücksburg . Founded in 1825 by a descendant of Johann, Duke Friedrich Wilhelm . Family members of this branch belong to the European nobility to this day and represent the current royal houses of Denmark and Norway , as well as Philip, Duke of Edinburgh, the prince consort of the British Queen Elizabeth II.
- The older Schleswig-Holstein-Sonderburg-Glücksburg line , founded in 1622 by Duke Philipp , resides at Glücksburg Castle in Glücksburg . The line expired in 1779.
- The Schleswig-Holstein-Sonderburg-Ærø line , founded by Duke Christian , residing in Ærøskøbing . Duke Christian died in 1633 with no descendants and his property was divided among the other sons of Johann.
- The Schleswig-Holstein-Sonderburg-Plön line , founded in 1623 by Duke Joachim Ernst , resides at the Plön Castle in Plön . The line expired in 1761. From it emerged
- The Schleswig-Holstein-Sonderburg-Plön-Rethwisch line , founded by Joachim Ernst II , residing in Rethwisch . This line became extinct in 1729.
- The younger line Schleswig-Holstein-Sonderburg-Norburg , founded by August von Schleswig-Holstein-Norburg-Plön . This line was reunited with the Duchy of Plön by Duke Joachim Friedrich in 1706.
- The older Schleswig-Holstein-Sonderburg-Norburg line , founded by Duke Johann Adolf , resides at Nordborg Castle on Alsen . After bankruptcy in 1669, the property was added to the Plön line in 1679.
- Family tree of the Glücksburg family
- History of Schleswig-Holstein; Rule separately, rule together
- Map of Schleswig-Holstein with an overview of the various administrative areas
- O. Hauser, W. Hunke, W. Müller: The house of luck castle and Europe . Verlag Mühlau, 1988. ISBN 3-87559-058-9
- Carsten Porskrog Rasmussen, Elke Imberger, Dieter Lohmeier, Ginger Momsen, Frauke Witte, Marion Hartwig (eds.): The princes of the country. Dukes and Counts of Schleswig, Holstein and Lauenburg . 1st edition. Wachholtz, 2008, ISBN 978-3-529-02606-5 .