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

Vessel: Three Brothers; flag: Great Britain; rig: Ship; estimated standardized tonnage: 428. People recorded in connection with the voyage: Investor: Lake, T; Investor: Lake, Richard; Investor: Lake, William Charles; Captain: Keatin, John; Captain: Caton, John. The voyage began at Liverpool on 20 September 1786. Principal recorded place where captives were acquired: Calabar (Bight of Biafra and Gulf of Guinea islands). Principal recorded disembarkation place: Dominica, place unspecified. Recorded outcome: Voyage completed as intended.