Dumont was born in Paris on 10 May 1704.
Pierre-Jean Mariette, who knew him well, reported that in his youth le Romain made his way to Rome by camping out; Mariette makes errors about his teacher in Rome, however. Dumont returned to Paris in 1725. In 1727, he first showed at the
Paris Salon and in 1728 he was received as a member of the
Académie Royale de Peinture et de Sculpture, with a
Hercule et Omphale as his
morceau de reception. In addition to his paintings he practiced
etching, in which medium he reproduced some of his paintings and, for example,
Servandoni's view of the fireworks celebrating the marriage of the dauphin, 1730. Aubusson's rivals at the royal manufacture of the
Gobelins gave him a back-handed compliment in a memoire to the royal administration dated 10 March 1754, and signed by Audran, Cozette and Neilson: "to prevent the decadence of the Gobelin Factory, it would be necessary to attach to it Sr.
Boucher," giving him the assistance of other painters of the Académie such as "Sieurs Dumont Le Romain, Jeaurat, Halle, Challe, Vien." Dumont was briefly Director of the Académie in 1763. When the official paintings school, the
École royale des élèves protegés opened in January 1749, Dumont was appointed governor, but withdrew after three months, citing insufficient funds supporting the new institution. Dumont died on 17 February 1781 in Paris. == Gallery ==