The slave ship Gregson departed on a transatlantic slave-trading voyage that would carry enslaved Africans to Dominica.

Vessel: Gregson; flag: Great Britain; rig: Ship; estimated standardized tonnage: 218.3. People recorded in connection with the voyage: Captain: Boats, William; Investor: Boats, William; Investor: Gregson, William; Investor: Wilson, Edward; Captain: Hanly, Richard; Investor: Hanly, Richard. The voyage began at Liverpool on 1 May 1771. Principal recorded place where captives were acquired: Bonny (Bight of Biafra and Gulf of Guinea islands). Principal recorded disembarkation place: Dominica, place unspecified. Recorded outcome: Voyage completed as intended.