Karl Friedrich Charles Frederick, Duke of Holstein-Gottorp and Price of Sweden, historic engraving of 1899, Kiel, Schleswig-Holstein, North Germany Stock Photo - Alamy
Karl Friedrich, Duke of Holstein-Gottorp Stock Photo - Alamy
Karl Fredrik, Duke of Holstein-Gottorp - Wikidata
Friedrich III, Duke of Holstein-Gottorp (1597-1659) - GAMEO
Duke of schleswig holstein hi-res stock photography and images - Alamy
European Heraldry :: Holstein-Gottorp
Carl Frederick of Schleswig-Holstein-Gottorp (1700-1739) - Find a Grave Memorial
Frederick IV, Duke of Holstein-Gottorp - Wikipedia
37 Duke Of Holstein Gottorp Photos and Premium High Res Pictures - Getty Images
Frederick Louis, Duke of Schleswig-Holstein-Sonderburg-Beck - Wikipedia
Frederick III, Duke of Holstein-Gottorp - Wikipedia
Frederick III, Duke of Holstein-Gottorp - Wikiwand
Adolf, Duke of Holstein-Gottorp - Wikipedia
Portrait of Peter Karl Ulrich, Duke of Holstein-Gottorp, later Tzar Peter III by Georg Khristopher Groot on artnet
94 Duke Of Holstein Photos and Premium High Res Pictures - Getty Images
John Adolphus, Duke of Schleswig-Holstein-Sonderburg-Plön - Wikiwand
Philip, Duke of Holstein-Gottorp - Wikipedia
Christian Albert, Duke of Holstein-Gottorp - Wikipedia
Duke of Holstein-Gottorp - Wikipedia
Prince Albert, Duke of Schleswig-Holstein | Unofficial Royalty
Charles Frederick, Duke of Holstein-Gottorp - Wikipedia
Karl Friedrich, Duke of Holstein-Gottorp Stock Photo - Alamy
Duke | Holstein International
File:David Richter d.y. - Karl Fredrik, Duke of Holstein-Gottorp - NMB 2137 - Nationalmuseum.jpg - Wikimedia Commons
