Constant Detré (Szilárd Eduard Diettmann) was born in Budapest (then a part of the Austro-Hungarian Empire) on 2 January 1891, and died 10 April 1945 in Garnat-sur-Engièvre a village of central France (département of Allier).
He was an artist who left his native Hungary for good in rather obscure circumstances following the repression against the Béla Kun government of 1919.
He settled in Paris where he mixed from 1920 to 1940 with representatives of the School of Paris and other Montparnasse artists, several of whom were Central European émigrés like himself, such as Pascin, a good friend of his.