ÃÂmile Maurice Léon Coulonvaux (; 26 February 1892 â 10 March 1966) was a Belgian liberal lawyer and politician. Coulonvaux was doctor in law and a lawyer. He became an alderman (1927âÂÂ1928) in Dinant and was also liberal senator (1939âÂÂ1946 and 1949âÂÂ1961) and President of the Liberal Party in 1937âÂÂ1940.