Disambiguation evidence for Charles IV, Duke of Mantua and Montferrat via surface form

"Charles IV, Duke of Mantua and Montferrat"

Triples (1)

Triples where some other subject referred to this entity as "Charles IV, Duke of Mantua and Montferrat".

Ercole Antonio Mattioli → employer →
"Charles IV, Duke of Mantua and Montferrat"
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