House of Schleswig-Holstein-Sonderburg-Augustenburg
| House of Schleswig-Holstein-Sonderburg-Augustenburg | |
|---|---|
| Parent house | House of Oldenburg |
| Country | Denmark |
| Founded | 1647 |
| Founder | Ernest Günther |
| Titles |
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| Dissolution | 27 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.