Scenes from Christ's Passion: The Mass of Saint Gregory

The notname Master of the Aachen Altar is given to an anonymous late gothic painter active in Cologne between 1495 and 1520 or 1480 and 1520, named for his master work, the Aachen Altar triptych owned by the Aachen Cathedral Treasury. Along with the Master of St Severin and the Master of the legend of St. Ursula he is part of a group of painters who were active in Cologne at the beginning of the sixteenth century and were Cologne's last significant practitioners of late gothic painting.