Robert Campin
There are no extant examples of manuscript miniatures by Van der Weyden, excepting a single tapestry, all of the attributed works are panel painting. Yet in the early to mid 14th century, artists often worked in a variety of mediums. In both Tournai and Brussels, where he is known to have been active, illuminators and panel painters were part of the same guild. He studied under Robert Campin and alongside Jacques Daret, both of whom are known to have produced miniatures.