Boniface III Marquess of Montferrat (1424–1494) Parents Joan of Savoy John Jacob, Marquess of Montferrat Children William IX, Marquess of Montferrat John George, Marquess of Montferrat Francesca de Montferrat Siblings Teodoro Paleologo di Montferrato John IV, Marquess of Montferrat William VIII, Marquess of Montferrat Amadea Palaiologina of Montferrat Isabella Palaiologina of Montferrat Partners NN Elena di Brosse Marija Branković Orvietana Fregoso