found: Paul Mathieu, 1872-1932, 1989:p. 29 (Paul Martin Théophile Mathieu; b. Saint-Josse-ten-Noode (borough of Brussels), Aug. 31, 1872) p. 66 (lived in France during the war) p. 115 (d. 1932)
found: Beeldend Benelux : biografisch handboek, 2000:(Mathieu, P. (Paul); b. St. Joost-ten-Noode, Aug. 31, 1872; d. 1932; painter; resided in Brussels)
found: Dutch Wikipedia, May 6, 2016(Paul Mathieu; b. Sint-Joost-ten-Node, Aug. 31, 1872; d. Brussels, 1932; Belgian painter and watercolorist; taught drawing at de Academie van Brussel, 1896-1932)