Portrait of Anthonie van Leeuwenhoek, Natural Philosopher and Zoologist in Delft

Jan Verkolje or Johannes Verkolje was a Dutch painter, draughtsman and engraver. He is mainly known for his portraits and genre pieces of elegant couples in interiors and, to a lesser extent, for his religious and mythological compositions. He was a gifted mezzotint artist. Trained in Amsterdam, Verkolje spent his active professional career iLien Delft where he had access to powerful patrons.