The slave ship Mary left the African coast carrying enslaved Africans toward Dominica. About 70 people had been taken aboard.

Vessel: Mary; flag: Great Britain; rig: Schooner; estimated standardized tonnage: 42. People recorded in connection with the voyage: Investor: Jones, James; Captain: Delatour, William; Investor: Boland, George; Captain: O'Brien, Martin. The voyage began at Bristol on 24 January 1791. Principal recorded place where captives were acquired: Bance/Bunce Island (Sierra Leone). Principal recorded disembarkation place: Dominica, place unspecified. Recorded outcome: Voyage completed as intended.