"Lucrezia Landriani (born c. 1440) was the mistress of Galeazzo Maria Sforza, Duke of Milan, and the mother of his renowned illegitimate daughter, Caterina Sforza, Lady of Imola, Countess of Forlì. Lucrezia had three other children by the Duke, and two by her husband." - (Wikipedia (en) 17.11.2019)
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