Michiel Jansz. van Mierevelt, Portrait of Hugo de Groot (Delft 1583 - Rostock 1645), portrait painting visual material wood oil, Rectangular painting of man half-length looking to the right millstone collar of the wambuis Right hand with ring on index finger in the left hand book bound in calfskin. signature: Mierevelt (right slightly above the middle at the height of the collar) Hugo de Groot Rotterdam In 1962: Mr. and Mrs. Hall at Djursholm near Stockholm..