Continuation of the business of Arnold Nesbitt, the uncle of John Nesbitt the elder, and failing in 1802. After the bankruptcy, John Nesbitt the younger re-established himself as a merchant.
Sources
London Gazette 15544 25/12 1802 p. 1382; https://www.historyofparliamentonline.org/volume/1790-1820/member/nesbitt-john-1745-1817 is possibly mistaken in its assertion that John Nesbitt the elder also re-entered business after 1802.