From A Bibliography of Alexandre Dumas père by Frank Wild Reed: A story of the world of society in Dumas' day. Period 1831-40. There is much evidence of some other hand besides that of Dumas, but no definite claim has been made.
Original edition: Paris, Michel Lévy Frères, 2 vols., 12mo., 1860. As "Les Drames Galants."
As "La Marquise d'Escoman;" Brussels, Méline, Cans et Cie., 5 vols., 32mo. (N.D.)
It now occupies two volumes in the standard Calmann-Lévy edition.
In Le Vasseur's "Alexandre Dumas Illustré" it forms part of Vol. XVII.
References :— Parran: "Bibliographie d'Alex. Dumas," page 67. Glinel: "Alex. Dumas et Son (Euvre," page 450.