Karel van der PluymKarel van der Pluym, was a Dutch Golden Age painter.BiographyHe was the son of Dominicus van der Pluym and Cornelia van Suytbroeck, the first cousin of Rembrandt. According to the RKD he was a pupil of Rembrandt. According to the Frick gallery, their "old woman with a book" was purchased by Henry Clay Frick in 1916 as a Rembrandt.