"William IV, Marquess of Montferrat"
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Title "William IV, Marquess of Montferrat" Publisher Wikipedia: The Free Encyclopedia. Wikimedia Foundation, Inc. https://en.wikipedia.org/wiki/William_IV,_Marquess_of_Montferrat, 10 Feb 2018 Source ID S4963 Linked to Guglielmo IV del Monferrato, Margrave of Montferrat
Ottone del Monferrato
Otta di Agli
Constance of Savoy