Om 4. Meaz 1790 is mid da Grindung van Département Lot-et-Garonne aa a District de Nérac grindd worn, dea in Tein om heiting Arrondissement entsprochn hod. Om 17. Feba 1800 is doraus entstondn, eaweitad uma oanige Kantone, as Arrondissement Nérac.