Lady Mary Pelham was launched in 1811 as a packet based in Falmouth, Cornwall for the Post Office Packet Service. She repelled attack by privateers in 1812 and 1813, the latter being a notable and controversial engagement with an American privateer. Another American privateer captured her in February 1815 in the West Indies. New owners retained her name and between 1815 and at least 1824 she continued to sail to the Continent and South America.
Packet
Lloyd's Register (LR) started carrying the Falmouth packets in 1812 and that is when Lady Mary Pelham first appeared in it.
James A. Stevens was appointed captain on 4 March 1811. On 14 October 1812 Lady Mary Pelham Packet repelled an attack off Cape Pallas by a privateer of 14 guns and 75 men. The privateer had earlier captured a vessel from Gibraltar returning there from Cagliari and armed with 10 guns. Lady Mary Pelham arrived at Falmouth on 5 December, having sailed from Malta on 7 November and Gibraltar on the 29th.
On 2 November 1813 Lady Mary Pelham, acting commander Perring (or Pering), and , John A. Norway, master, encountered the American privateer Globe, Captain Richard Moon, off Teneriffe. During the engagement, Captain Norway, the surgeon, and two seamen were killed on Montague; 11 seamen were wounded. Lady Mary Pelham had two men wounded, one of them being Perring.
After the engagement Globe put into Grand Canary in a highly damaged state. She had had 33 men killed, 19 wounded, and six captured in attempts to board Montague.
There were conflicting British accounts of the engagement, one denigrating Perring as a lawyer whose sole experience had been sailing a yacht, and Lady Mary Pelhams contribution to the engagement being too little too late. The matter came up in Parliament where documents were tabled showing that a second court of inquiry had exonerated Captain Perring and acknowledged that Lady Mary Pelhams intervention had saved Montague from capture and had eventually succeeded in driving Globe off.
When Moon and Globe returned to Wilmington, North Carolina, on 27 January 1814, Moon reported that on 1 November he had engaged two British brigs off Madeira, but the British stopped at Funchal Roads. On 2 November, Globe gave chase to the two British brigs. An engagement ensued but Globe lost sight of the British as the weather became squally in the evening. At 6a.m. on 3 November, Globe again saw the brigs and engaged. At 12.30a.m. Globe put boarders on board the largest brig, but then sheered off, leaving her first and second lieutenants, and three seamen on the brig. Moon assumed that they had been killed. Th second, smaller brig came up, crossed Globes bow, and fired a broadside that so damaged Globes sail and rigging that she became unmanageable. Still, Globe continued to engage the larger brig, silencing her, with the result that the brig struck at 3p.m. Globe then turned to engage the smaller brig, but Moon discovered that Globe was in a sinking state as she had taken seven shot between wind and water. He then sailed to take possession of the larger brig, which he had seen throw her mails overboard. As Globe approached, the larger brig raised her colours and the two packets fired broadsides. Moon decided to sail away to effect repairs. He stated that the larger brig had 18 guns and the smaller 16 guns, all 12-pounders. (The Americans had found two double-headed 12-pounder shots in Globes hull. Moon believed that she had killed a great number of men on both brigs, including the captain and first officer of the larger brig before she struck. While Globe was refitting at Grand Canary, a Spanish brig arrived from St Croix, Teneriffe. The Spaniard reported that two British packets had arrived there, one of 18 guns and the other of 14 guns. The two had lost 27 men killed in an engagement with an American privateer on 2 November.
Captain James Graham assumed command of Lady Mary Pelham on 21 June 1814.
Capture
Captain Graham sailed from Falmouth on 20 November 1814 and arrived at Suriname in January 1815. Lady Mary Pelham sailed from Suriname to Barbados, and then to Antigua, leaving Antigua on 1 February.