She also twice transported emigrants from Britain, once to South Africa and then once, most notably because of the subsequent notoriety of her destination, to the at best misguided and at worst fraudulent colony of Poyais.

Kennersley Castle appears in Lloyd's Register in 1812 with J. Turner, master, changing to T. Sharp, Temple, owner, and trade London transport.

On 7 February 1817 Kennersley Castle was sailing from Jamaica to Britain in company with and the transport Retrieve and Pomona when three large Carthaginian privateers chased them off San Domingo.

MacGregor chartered Kennersley Castle, Crouch, master, in October 1822 to carry emigrants from Scotland to the nascent colony.

Lloyd's List reported on 4 November 1828 that Kennersley Castle, Crouch, master, had put into Plymouth after being on shore in the Gulf of Saint Lawrence.

[14] When Kinnersley Castle ran aground on a reef near Pictou, Nova Scotia, on 17 September 1830 her crew abandoned her.

At the time of her mishap, Kinnersley Castle was on a voyage from Pugwash, Nova Scotia, to Newcastle upon Tyne, Northumberland.

[15] Actually, she had left Pictou with a cargo of lumber when on 30 September 1830 she struck a rock near the entrance to the harbour and put back waterlogged.

[16] At Pictou, Grewcock, her master, signed over to, or put Kennersley Castle under the care of a Mr. Smith, merchant there, and sailed to England in October.

[17] Lloyd's List reported on 22 November 1833 that Kennersley Castle was on shore at Mille Vaches, Quebec, full of water.

In May 1834 the Montreal Herald and Daily Commercial Gazette reported that Kennersley Castle, which had stranded near the New Felix, Souligny in Fall 1833, had been burnt to recover her iron.