In the 19th century, his works, like many Early Netherlandish paintings, were attributed to Jan Van Eyck or Hans Memling. At the 1902 Exposition des primitifs flamands à Bruges, the "Mass of Saint Gregory" panels (now in the Metropolitan Museum) were attributed to an unknown follower of Rogier Van der Weyden, placing the artist more in the Brussels' school of artists than the earlier attributions. Multiple works were first attributed to this artist by Max Jacob Friedländer.