Between 1799 and 1802 she made two voyages from Liverpool as a slave ship in the triangular trade in enslaved people.

Lloyd's List reported in October 1795 that Baron Montilambert had arrived at Carthagena from Jamaica.

Then it reported that Baron de Monte Lambert, Perry, master, had put into Ilfracombe in distress and would have to unload.

[2] 1st voyage transporting enslaved people (1799–1801): Captain William Thomas sailed from Liverpool on 26 December 1799.

[5] 2nd voyage transporting enslaved people (1801–Loss): Captain Alexander Stuart sailed from Liverpool on 12 October 1801.

[8] In August 1802 Lloyd's List reported that Baron Montalambert had arrived at St Vincent from Africa and had sailed for the Bahamas.

In 1802 Baron Montlambert was wrecked off Crooked Island, Bahamas, with the loss of all on board, including over 300 captives.