From A Bibliography of Alexandre Dumas père by Frank Wild Reed: A translation by Victor Perceval of Trelawny's "Adventures of a Younger Son," only claiming to be "Publié par Alex. Dumas."
First appeared, rather irregularly, in "Le Mousquetaire" between August 3rd, 1855, and February 9th, 1856.
Original edition : Paris, Michel Lévy Frères, 3 vols., 12mo., 1860.
The present standard Calmann-Lévy edition is a reprint of these three volumes.
It is in Le Vasseur's "Alexandre Dumas Illustré," Vol. XIV.