John Frederick of Schleswig-Holstein-Gottorp was the Lutheran Administrator of the Prince-Archbishopric of Bremen, the Prince-Bishopric of Lübeck and the Prince-Bishopric of Verden.
Johan Frederik af Slesvig Holsten Gottorp
Johann Adolf of Holstein-Gottorp was a Duke of Holstein-Gottorp.
John Frederick of Holstein-Gottorp
…Friedrich and Christine. In 1621 Ferdinand II, Holy Roman Emperor, legitimated them and ennobled them as von Holstein. After John Frederick's brother John Adolf succeeded their brother Philip, Duke of Schleswig-Holstein-Gottorp as Duke of Schleswig-Holstein-Gottorp, the Bremian Chapter feared that John Adolf…
Portrait, c. 1600–1616
Portrait of John Adolf as a child
Portrait of John Adolf by an anonymous artist, 1601