Jan Frans Van Douven (after) ( 1656 - 1727 ) was a German painter. Jan Frans Van Douven (after) s works have been auctioned off multiple times, with realized prices varying according to the size and medium of the artwork, for instance of 9115.26 USD for PORTRAIT OF DUKE JOHANN FRIEDRICH DUKE OF BRUNSWICK AND LUNEBURG (1625-1679) in 2005