The Schleswig-Holstein-Sonderburg-Franzhagen line was a short-lived name of the main line of the ducal house of Schleswig-Holstein-Sonderburg, after its bankruptcy in 1667. The name is derived from the Franzhagen Castle in Schulendorf in the duchy of Saxe-Lauenburg. The castle was inherited by Eleonore Charlotte of Saxe-Lauenburg-Franzhagen, who brought it into her marriage with former Duke Christian Adolph I. After their bankruptcy, the Sonderburg line was reduced to its possession of Franzhagen. The Franzhagen castle was demolished in 1716.

List of DukesEdit

Reign Name Remarks
1676–1702 Christian Adolf I Former Duke of Schleswig-Holstein-Sonderburg, was declared bankrupt in 1667, the former headquarters Sonderburg Castle went to the Danish crown. In 1676, he married Eleonore Charlotte of Saxe-Lauenburg-Franzhagen, who brought eponymous castle Franzhagen into the marriage.
1702–1707 Christian Leopold Son, married Anna Sophia Segelke morganatically, therefore, his children could not inherit his real estate
1707–1708 Louis Charles Brother, married Anna Barbara Dorothea of Winterfeld morganatically. His children were ennobled, allowing them to inherit the castle.
1708–1709 Christian Adolf II Underage son and heir. With him, the line died out.

The real power of government from 1702 was wielded by Eleonore Charlotte of Saxe-Lauenburg-Franzhagen, the widow of Christian Adolf I, as the sons had married beneath their station. Anna Barbara Dorothea of Winterfeld never owned more than a house in Billwerder, until her death in 1739.

See alsoEdit


  • Mecklenburgische Jahrbücher, Vol. 31-32, p.17f, Ludwig Karl von Franzhagen
  • Mecklenburgische Jahrbücher, Vol. 31-32, p.13f, Leopold Christian von Franzhagen