skos:altLabel | - Duke of Holstein
- Duke Charles
- Charles Frederick
- Charles<br />Frederick
- Karl Friedrich
- Charles Frederick, Duke of Schleswig-Holstein-Gottorp
- Charles Frederick I, Duke of Holstein-Gottorp
- Charles Frederick of Holstein-Gottorp
- Charles Frederick of Schleswig-Holstein-Gottorp
- Charles Frederick, Duke of Holstein
- Duke Charles Frederick
- Duke of Holstein-Gottorp
- Duke of Schleswig-Holstein-Gottorp
- Karl Friedrich, Duke of Holstein-Gottorp
- Karl-Fridrikh Golshteyn-Gottorpsky
- the duke of Holstein-Gottorp
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