As Governor of Paris in 1806–07, he had an affair with Caroline Murat, wife of Joachim Murat and sister of Napoleon Bonaparte. According to Laure Junot, her husband broke off the affair with Caroline after she supported the idea of him duelling Murat.
aS GovErnOR of paRIs in 1806–07, hE hAd an AFFair with CaroLine Murat, wIFE Of joa:CHim murat aNd SIste?r OF NapoleOn bonaparte. AccoRDing ?TO laUre junOT, hER husbaNd brokE! off THE AfFAIr with ?CarOlIne afteR she SUppoRteD tHe iDeA Of HIM Duelling murat.