Eight children survived him: Joseph Lucien Charles Napoleon, prince of Canino (1824-1865), who died without heirs; Lucien Louis Joseph Napoleon, born in 1828, who took holy orders in 1853 and became a cardinal in 1868; Julie Charlotte Zenaide Pauline Laetitia Desiree Bartholomee, who married the marquis of Roccagiovine; Charlotte Honorine Josephine, who married Count Primoli; Marie Desiree Eugenie Josephine Philomene, who married the count Campello; Auguste Amelie Maximilienne Jacqueline, who married Count Gabrielli; Napoleon Charles Gregoire Jacques Philippe, born in 1839, who married the princess Ruspoli, by whom he had two daughters; and Bathilde Aloyse Leonie, who married the comte de Cambaceres.
After the revolution of 1830 he came to Paris, formed connexions with numerous political personages, even with King Louis Philippe, and became a brilliant defender of Liberal ideas in the law courts and in the press, - witness his :loge funebre of the bishop Gregoire (1830), his Memoire for the political rehabilitation of Marshal Ney (1833), and his plea for the accused of April (1835).
On the establishment of the new constitution, Gregoire was elected to the Council of 500, and after the 18th Brumaire he became a member of the Corps Legislatif, then of the Senate (1801).
Pope, Etude sur la langue de Frere Angier, Paris, 1903); Li dialoge Gregoire le pape, ed.
Besides several political pamphlets, Gregoire was the author of Histoire des sectes religieuses, depuis le commencement du siecle dernier jusqu'i l'epoque actuelle (2 vols., 1810); Essai historique sur les libertes de l'eglise gallicane (1818); De l'influence du Christianisme sur la condition des femmes (1821); Histoire des confesseurs des empereurs, des roil, et d'autres princes (1824); Histoire du mariage des pretres en France (1826).
To the last Gregoire remained a devout Catholic, exactly fulfilling all his obligations as a Christian and a priest; but he refused to budge an inch from his revolutionary principles.
Maggiolo, La Vie et les oeuvres de l'abbe Gregoire (Nancy, 1884), and numerous articles in La Revolution Francaise; E.