MARCHIONESS OF SALISBURY packet vessel

[aukepalmhof]

I was already for a long time looking for details and information on this stamp, but till so far I did not have any luck.
From Mr. Benn of the World Ship Society, I got the following on the ship.

The correct name is MARCHIONESS OF SALISBURY, not any ship with the name of MARQUESS OF SALISBURY was sailing in that part of the world as given on the stamp (1817)
She was named after the wife of the Marques.
Built in 1816 on the River Thames for Capt. Graham.
A wooden brig of 198 tons, dim. 82. 1½ x 23.10 x 14.11ft.
She was built for the Falmouth Packet service.

Her earlier voyages were.
16 March 1817 arrived at Falmouth from the River Thames (new ship).
09 April 1817 Sailed Falmouth, 13 May 1817 arrived Barbados.
24 May 1817, arrived Jamaica, 23 June 1817 sailed Jamaica. 25 July 1817 arrived Falmouth.

19 August 1817 sailed Falmouth, 21 Sept. 1817 arrived Barbados.
Sailed from Barbados to Jamaica, and sailed from Jamaica on 25 Oct. 1817, arrived Falmouth 07 Dec. 1817.

18 Jan 1818 sailed Falmouth to Gibraltar-Malta-Gibraltar and arrived back at Falmouth on 09 April 1818.

18 May 1818 sailed Falmouth to Madeira-Rio de Janeiro-Bahia (Salvador), and returned Falmouth 22 Sept. 1818.

25 Oct. 1818 sailed Falmouth for the Leeward Islands, 24 Dec. 1818 sailed to St Thomas Virgin Islands, arrived Falmouth 19 Jan. 1819.
13 March 1819 Sailed Falmouth for Brazil via Madeira & Tenerife, arrived back 26 July 1819 at Falmouth.

Sailed 10 Sept. 1819 from Falmouth to Gibraltar-Malta-Corfu-Malta- Gibraltar to Falmouth where she arrived 18 Dec. 1819. All her voyages thereafter were in the services of the Falmouth Packet.

The Lloyds List makes very infrequent references to any arrivals in the West Indies apart from Barbados, Jamaica St Thomas.

In 1825 it was decided that the Falmouth Packet service should no longer be run by the Post Office and that the Royal Navy should take over.
Those vessels nearing the end of their fitness for the mail service were allowed to continue until the contract expired.
When the Royal navy brigs of similar size were allocated, the Royal Navy bought the newer packets.
The MARCHIONESS OF SALISBURY was bought on 28 July 1829 commissioned and renamed HMS NIGHTINGALE (armament 6 guns and 4 – 12pdr. carronades) on 15 March 1830 and continued in the Packet service until sold on 24 November 1842.
March 1830 was she under command of Lieut George Fortescue at Falmouth.
1839 Hulked as a depot at Plymouth.
24 November 1842 sold to Greenwood & Clarcke
What became of her after this date is unknown.

Montserrat 1980 40c sg460, scott?

Source: For the HMS NIGHTENGALE, The Sail and Steam Navy List by David Lyon and Riff Winfield.