Disambiguation evidence for John Frederick, Duke of Schleswig-Holstein-Gottorp via surface form

"John Frederick, Duke of Schleswig-Holstein-Gottorp"

Triples (1)

Triples where some other subject referred to this entity as "John Frederick, Duke of Schleswig-Holstein-Gottorp".

Prince-Archbishopric of Bremen → notableRuler →
"John Frederick, Duke of Schleswig-Holstein-Gottorp"
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