Johann Wilhelm, Elector Palatine
According to the RKD he learned to paint flowers from Ernst Stuven, and became a master of the Antwerp Guild of St. Luke in 1712, and the following year court painter to Johann Wilhelm, Elector Palatine. He took the family of Jan van Nickelen in tow to Dusseldorp, where they painted at court, and Van der Mijn taught Van Nickelen's daughter Jacoba Maria van Nickelen to paint flowers. She met the painters Rachel Ruysch and Willem Troost (whom Jacoba married) there.