Denis the Carthusian

Portrait of a Carthusian by Petrus Christus; possibly represents Denis the Carthusian (1446)

Denis the Carthusian (1402–1471), also known as Denys van Leeuwen, Denis Ryckel, Dionysius van Rijkel, Denys le Chartreux (or other combinations of these terms), was a Roman Catholic theologian and mystic.