Whakaotihia te rerenga e whai ake nei: I te tau 1817, ka marenatia ia ki a Nancy de Bardi, ā, e whā ana tamariki. Ko tōna pāpā, nā ngā wheako o mua i ārahi ai ia ki te kino ki ngā rangatira, i whakatipu ia i roto i te whakapono pakeke o te Pire Tuatahi. I roto i te Huringa, te Emepaea, me te whakaoranga e whai ake nei, kaore a Poisson i aro ki nga mahi torangapu, engari i aro ki te pangarau. I tohua ia ki te mana o te parani i te 1825, engari kaore ia i tango i te tohu, kaore ano hoki i whakamahi i te taitara. I te Poutu-te-rangi 1818, i pootihia ia hei mema o te Royal Society, i te 1822 he mema honore ke o te American Academy of Arts and Sciences, a i te 1823 he mema ke o te Royal Swedish Academy of Sciences. Ko te
Ko te hurihanga o Hurae 1830 i whakawehi i a ia ki te ngaro o ana honore katoa; engari ko tenei whakama ki te kawanatanga o Louis-Philippe i aukatihia e François Jean Dominique Arago, nana nei, i te wa e whakaarohia ana tana "whakakahoretanga" e te kaunihera o nga minita, i whakawhiwhia ki a ia he tono ki te kai i te Palais-Royal, i reira ia i tuwhera ai, i whakawhiwhia ki a ia e te kingi tangata whenua, nana nei ia i "mahara". I muri i tenei, o te akoranga, i taea tona whakaiti, a e whitu nga tau i muri mai i hanga ia he peer o France, e kore hoki take tōrangapū, engari ano he māngai o te pūtaiao French.