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Lady with an Ermine is a painting by Leonardo da Vinci, from around 1489–1490. The subject of the...

Lady with an Ermine is a painting by Leonardo da Vinci, from around 1489–1490. The subject of the portrait is identified as Cecilia Gallerani, and was probably painted at a time when she was the mistress of Lodovico Sforza, Duke of Milan and Leonardo was in the service of the Duke. The painting is one of only four female portraits painted by Leonardo, the others being the Mona Lisa, the portrait of Ginevra de' Benci and La Belle Ferronière. It is displayed by the Czartoryski Museum, Kraków, Poland and is cited in the museum's guide as the first truly modern portrait. When exhibited in The Museum of Fine Arts, Houston, it was described as "signal[ling] a breakthrough in the art of psychological portraiture". The small portrait generally called The Lady with the Ermine was painted in oils on wooden panel by Leonardo da Vinci. At the time of its painting, the medium of oil paint was relatively new to Italy, having been introduced in the 1470s. Leonardo was one of those artists who adopted the new medium and skillfully exploited its qualities. The sitter has been identified with reasonable security as Cecilia Gallerani who was the mistress of Leonardo's employer, Lodovico Sforza, known