Vallerey was born in Rosendaël, now incorporated into Dunkirk, in the Nord department of France, the son of Jules Vallerey (1853–1929), who after joining the French Navy became a teacher of hydrography, and published a number of technical and scientific works,[1][2] and his wife Marie Madeleine Amélie (née Duhan) (1867 – 1954).
[3] In 1914 he obtained the diplôme en droit (first level legal qualification) at Paris.
On 12 July 1918 at La Penne-sur-Huveaune (Bouches-du-Rhône) he married his first cousin Juliette Marie Chandon (21 November 1889 – 18 February 1940),[5] sister of the astronomer Édmée Chandon; under the pen names Gisèle Vallerey, Georges Chandon, G. Chandon and Noël Guy she not only collaborated with her husband but also in her own right was a prolific author of original works of fiction, adaptations and translations and of song lyrics.
[6] After his marriage Vallery moved to Grasse near Cannes, where he remained for the rest of his life and where he died on 10 November 1974.
[4] From the German; published by Editions Nathan, collection Aventures et voyages: