However, Giacomo was a son of Philip by his second wife Catherine de la Tour du Pin and his claim to be the heir of Isabella of Villehardouin was disputed.

Leaving the direction of the affairs of the marquisate to Jean-Jacques, the son of her husband by his first marriage, she retired to Alba where she joined the Third Order of St.

[6] A little later, Filippo Maria Visconti, Duke of Milan, asked her hand in marriage and begged Pope Martin V to relieve her of her vow.

But Margaret opposed a formal refusal to this request and with several young women of rank, she founded a monastery and placed it under the rule of the order of St. Dominic.

[6] On 13 December 1464, her remains were placed in a simple tomb; in 1481 they were transferred to a different and much more beautiful sepulchre built in her monastery at the expense of William VIII of Montferrat.