フランチェスコ・スフォルツァ
Blanche was the eldest daughter of Marquess William VIII Palaiologos of Montferrat and Elisabetta, daughter of Duke Francesco I Sforza of Milan and Bianca Maria Visconti, after whom Blanche was named. Her mother, Elisabetta, died at age 17 when Blanche was less than a year old.