The slave ship Marquis of Granby departed on a transatlantic slave-trading voyage that would carry enslaved Africans to Puerto Rico.

Vessel: Marquis of Granby; flag: Great Britain; rig: Schooner; estimated standardized tonnage: 92.3. People recorded in connection with the voyage: Captain: Brown, John; Investor: Brown, John; Investor: Seton, Robert; Captain: Brown, Thomas. The voyage began at Liverpool on 3 November 1761. Principal recorded place where captives were acquired: Windward Coast, place unspecified. Principal recorded disembarkation place: Puerto Rico, port unspecified. Recorded outcome: Captured unspecified after embarkation of enslaved people.