In 1831, he became a member of the new "Istituto di Corrispondenza Archeologica", founded by Eduard Gerhard, and published some of his work in their journal.
Two years later, he was named a member of the Comité des Arts et Monuments Historiques, established by François Guizot.
That same year, he began work on his inventory of monuments, Statistique monumentale de Paris [fr].
Their youngest, Angéline (1844-1877), was a poet.Ten years after his proposal at the Salon, he was appointed to oversee a project that would join the Palais des Thermes and the Hôtel de Cluny, to create a new establishment for housing the collection of medieval objects gathered by Alexandre Du Sommerard.
That same year, he was elected to the Académie des Beaux-Arts, where he took Seat #6 in the "Unattached" section[check spelling], succeeding the Comte de Rambuteau (deceased).