About John Adolphus, Duke of Schleswig-Holstein-Sonderburg-Plön
John Adolphus of Schleswig-Holstein-Sonderburg-Plön (German: Johann Adolf or Hans Adolf; 8 April 1634, Ahrensbök – 2 July 1704 Ruhleben) was the second Duke of Schleswig-Holstein-Sonderburg-Plön, which had been created by a division of the Duchy of Schleswig-Holstein-Sonderburg.
Author: Johann Valentin Tischbein (1715-1768) Source: Minis, S., De terugkeer van de gouverneurs. De Gouverneursportretten uit het Jachtslot Fasanerie te Fulda. Maastricht, 1998, p.35 License: CC-PD-Mark PD-Art (PD-old-100)