Robert Jasper, Baron van der Capellen tot den Marsch was a scion from the noble regenten family Van der Capellen from Guelders, who became a Patriot, and leader of the movement's democratic wing. He succeeded his cousin Joan Derk van der Capellen tot den Pol after his death in 1784.
- Occupation
- politician, jurist
- Born
- April 30, 1743
- Died
- June 7, 1814
