Kammala jumla mai zuwa: Shi ɗan Jean Lannes ne, 1st duke de Montebello, Marshal na Daular, wanda ya mutu daga raunin da ya samu a lokacin yakin Essling a ranar 22 ga Mayu, 1809, da matarsa ta biyu, Antoinette Scholastica Guéhenneuc. An sanya shi a matsayin Peer na Faransa a ranar 27 ga Janairu 1827 ta Charles X saboda la'akari da ayyukan da mahaifinsa ya yi, duk da haka ya zauna a Palais du Luxembourg (wurin taron majalisar Peers) bayan da aka yanke shawarar cewa za a ba shi izinin zama a matsayin Peer na Faransa.
Juyin juya halin 1830. A halin da ake ciki, ya yi tafiya zuwa Amurka, sa'an nan kuma aka haɗa shi da Ofishin Jakadancin Faransa a Roma, tare da Vicomte de Chateaubriand.