Disambiguation evidence for John the Elder, Duke of Holstein-Haderslev via surface form

"John the Elder, Duke of Schleswig-Holstein-Haderslev"

Triples (1)

Triples where some other subject referred to this entity as "John the Elder, Duke of Schleswig-Holstein-Haderslev".

Francis, Duke of Schleswig-Holstein → sibling →
"John the Elder, Duke of Schleswig-Holstein-Haderslev"
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