a Flemish ascetic theologian, possibly brother of Willem van Blitterswyck, of the order of Carthusians, a native of Brussels, died July 28, 1661. He wrote, Soupirs Spirituels vers Dieu (Bruges, 1629): — Tresor de Prieres a la Vierge, avant et Apres la Confession: — Oraison a 1'Usage des Per'sonnes qui Visitent les Saintes Images de la Vierge, Exposees a Bruxelles a la Veneration Publique (Brussels, 1623). He also left a great number of religious works in Flemish; and, in unpublished form, eighteen treatises and discourses. See Hoefer, Nouv. Biog. Gen., s.v.