Monlezun, Jean-Justin a Swiss ecclesiastic and historian, was born at Saramon, near Auch, in 1800. He studied at the College of Aire, consecrated his first labors to the instruction of youth destined for the service of the altar, and was subsequently appointed to the parish of Castelnau d'Arbieu, near Lictoure, and in 1833 to that of Barran (canton of Auch). The archbishop of Auch appointed him in 1847 titular canon of his metropolitan see. He died in 1859. Besides numerous articles published in different journals and historical collections, Monlezun wrote, Histoire de la Gascoyne, depuis les temps lesplus reculsjusqua nosjours (Auch, 1846-50, 7 volumes, 8vo); this begins with the 3d century before the Christian nera, and closes at the end of the last century: — L'Eglise angelique, ou Histoire de l'Eglise de Notre-Dame du Puy, et des etablisements religieux qui l'entourent (Clermont, 1854, 18mo): — Notice historique sur la ville de Mirande (1856, 8vo): — Vies des saints Eveques de la metropole d'Auch (1857, 8vo).