Charles Frederick, Duke of Schleswig-Holstein-Gottorp
Frederick IV, Duke of Schleswig-Holstein-Gottorp
Knight of the Order of St. Alexander Nevsky
Carl Frederick of Sweden c 1722 by David von Krafft.jpg
Brockhaus and Efron Encyclopedic Dictionary
Bordesholm Klosterkirche Grabkapelle Karl Friedrich img02.jpg
Royal Monogram of Charles Frederick, Duke of Holstein-Gottorp.svg
p=karl friedrich;n=von schleswig holstein gottorp
Dictionary of Swedish National Biography