[1] She was the daughter of Galeotto I del Carretto, Margrave of Finale.
Her husband designated their daughter Claudine as ruler of Monaco upon his death.
When he died in 1457, he was succeeded by their daughter Claudine, then only a child, but the regency government was assigned to Blanche's mother-in-law Pomellina Fregoso rather than to Blanche.
[1] Pomellina was deposed by Claudine's cousin Lambert in 1458, who assumed the Lordship of Monaco himself.
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