found: Blessed Martin de Porres, 1953:t.p. (Columba Ryan)
found: The theory of substance as developed by Aquinas, considered with reference to later philosophy, 1948:t.p. (C.P. Ryan, St Catherine's Society; D.Phil. thesis in literae humaniores, Univ. of Oxford)
found: Oxford University list of members, 1972(Ryan, Columba Patrick)
found: Times online WWW site, Aug. 20, 2009(Father Columba Ryan, OP; b. Patrick Ryan, Jan. 13, 1916, Hampstead, North London; d. Aug. 4, 2009; Dominican priest, teacher of philosophy, university chaplain and indomitable pilgrim with a puckish wit)