The Duchy of Schleswig-Holstein-Sonderburg-Plön, also Schleswig-Holstein-Plön, Holstein-Plön or just Duchy of Plön, was a small sub-duchy created by the physical division of the Duchy of Schleswig-Hol
Plön Castle, former residence of the dukes
The coat of arms of Plön is encircled by the collar of the Order of the Elephant. The crown and orb represent royal Danish descent (relief from the gable panel on Traventhal Castle)
Joachim Ernst I af Slesvig Holsten Sønderborg Pløn NM Grh 41
1668 Joachim Friedrich
Traventhal House
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Traventhal House in the municipality of Traventhal near Bad Segeberg in the southern part of the German state of Schleswig-Holstein was the summer residence of the dukes of Schleswig-Holstein-Sonderbu
Schleswig-Holstein-Sonderburg-Plön
…name under his second son, Duke Joachim Ernest; this reverted to the line of the first born in 1729. In 1700 the Treaty of Traventhal was concluded at Traventhal House in Segeberg, a residence belonging to the Duchy of Plön. In 1704 both Duke John Adolphus and his son and heir, Adolphus Augustus, died. Although Duke…
Main building of Traventhal House around 1760. Part of a copperplate engraving by G.Heumann