skos:altLabel | - William Frederick
- Frederick II
- Wilhelm Friedrich, Hereditary Prince of Schleswig-Holstein-Sonderburg-Glücksburg
- Friedrich, Duke of Schleswig-Holstein
- Prince Wilhelm Friedrich
- Wilhelm Friedrich
- William Frederick, Duke of Schleswig-Holstein
- ''Wilhelm Friedrich'' Christian Günther Albert Adolf Georg, Duke of Schleswig-Holstein
- – Friedrich von Schleswig-Holstein
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