Mass of Saint Gregory; Mass of Saint Gregory. Gregorius kneels before the altar and sees the vision of Christ rising from the grave surrounded by the passion tools. On the left the four church fathers kneel; on the right a monk with the tiara; two nuns of the brigit order and two bishops. Originating from the Marienwater monastery of the Brigit Order in Koudewater.; anonymous; Brabant; c. 1500; panel; oil paint (paint); support: h 66.8 cm x w 62 cm