Robert Campin
In the 20th century, several scholars suggested that the Master of Flémalle may be Robert Campin, documented as a master painter in Tournai from 1406. The argument turns around a paper mentioning two pupils entering his studio in 1427 - Jacques Daret and Rogelet de la Pasture. The latter was probably Rogier van der Weyden. A very well-documented altarpiece by Daret shows striking similarities with the works of Master of Flémalle, as do early works by Rogier. Therefore, it is tempting to assume that both Daret and Rogier were disciples of the Master of Flémalle, i.e. Robert Campin. Another possibility, however, is that the Flémalle panels were painted by Rogier himself when he was still in his twenties. Some scholars have even attributed the famous "Deposition" in the Prado (Madrid) to Campin rather than Van der Weyden.