Both C1117 and C1116 are recorded in 1835, with only C1116 in 1839 and presumably thereafter. Rosanoski suspects one of C1115 and C1116 is incorrect.
Columbus operated from Nantucket in 1820–1843, ending with sale to New London. The first owner is given only as Samuel ?, and Paul Mitchell is named during 1831–1835. Agents included Uriah Folger, Richard Mitchell, William B. Rodman, Paul Mitchell & Sons and R. Mitchell & Sons.
Keep the explicit scope label independent; no alias or company identity is inferred.