Disambiguation evidence for Frederick IV, Duke of Saxe-Gotha-Altenburg via surface form

"Frederick IV, Duke of Saxe-Gotha-Altenburg"

Triples (1)

Triples where some other subject referred to this entity as "Frederick IV, Duke of Saxe-Gotha-Altenburg".

Duke of Saxe-Gotha-Altenburg → lastHolder →
"Frederick IV, Duke of Saxe-Gotha-Altenburg"
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