Walter was buried in the abbey at Pontoise. He was canonized by Hugh,
Archbishop of Rouen, in 1153, and was the last saint in Western Europe to be canonized by an authority other than the pope. "The last case of canonization by a metropolitan is said to have been that of St. Gaultier, or Gaucher, abbat [sic] of Pontoise, by the Archbishop of Rouen, A.D. 1153. A decree of
Pope Alexander III, A.D. 1170, gave the prerogative to the pope thenceforth, so far as the Western Church was concerned." During the
French Revolution, his body was
translated to the cemetery of Pontoise, and was later lost. The College of Saint Martin of Pontoise, now an
Oratorian foundation, celebrates his feast. == References ==