 Théophile Marion Dumersan

Théophile Marion Dumersan (4 January 1780, Plou, Cher – 13 April 1849, Paris) was a French writer of plays, vaudevilles, poetry, novels, chanson collections, librettos, and novels, as well as a numismatist and curator attached to the Cabinet des médailles et antiques of the Bibliothèque royale.The family's real surname was Marion but – to distinguish himself from his brothers – Théophile's brother altered his surname to "du Mersan", after the name of one of its lands.