Disambiguation evidence for John Casimir, Duke of Saxe-Coburg via surface form

"John Casimir, Duke of Saxe-Coburg"

Triples (1)

Triples where some other subject referred to this entity as "John Casimir, Duke of Saxe-Coburg".

John Frederick II, Duke of Saxony → child →
"John Casimir, Duke of Saxe-Coburg"
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