Beatrice of Montferrat 13th-century Italian noblewoman (b. 1210) Parents Berta di Clavesana William VI, Marquess of Montferrat Children Jean de Bourgogne Guigues VII of Viennois Siblings Alix of Montferrat Boniface II, Marquess of Montferrat Oddone di Monferrato Dauphine de Saint-Bonnet Partners Guigues VI of Viennois