The slave ship Marquis of Lothian departed on a transatlantic slave-trading voyage that would carry enslaved Africans to Martinique.

Vessel: Marquis of Lothian; flag: Great Britain; estimated standardized tonnage: 200.3. People recorded in connection with the voyage: Investor: Powell, John; Captain: Griffiths, John; Investor: Powell, Joshua; Investor: Ruscombe, John; Captain: Jones, Thomas. The voyage began at Bristol on 30 June 1756. Principal recorded place where captives were acquired: Bonny (Bight of Biafra and Gulf of Guinea islands). Principal recorded disembarkation place: Martinique, place unspecified. Recorded outcome: Captured by the French - after embarkation of enslaved people.