The slave ship William departed from Jamaica after the slave-trading stage of the voyage.

Vessel: William; flag: Great Britain; rig: Snauw; estimated standardized tonnage: 146.3. People recorded in connection with the voyage: Investor: Spencer, Lawrence; Captain: Welch, John; Investor: Welch, John; Captain: Wilcock, Blackburn. The voyage began at Liverpool on 26 March 1756. Principal recorded place where captives were acquired: Bonny (Bight of Biafra and Gulf of Guinea islands). Principal recorded disembarkation place: Kingston. Recorded outcome: Voyage completed as intended.