Date of Seniority Royal Navy 1 January 1814
George Thomson was appointed Assistant-Surgeon to the Daedalus
in 1810. 
He was appointed Surgeon in the Royal Navy on 1 January 1814 and as entered in the Navy List of Medical Officers in that year. 
George Thomson was employed as Surgeon Superintendent on two convict ship voyages to Australia:
to New South Wales in 1826
to New South Wales in 1828.
By the entry at Oxnam Monumental Inscriptions
By Elizabeth Leitch, Joanne Burns and Davina Smart, he may have died at Port Mahon, Minorca, on 17 June 1834 aged 43 years.
Cholera ravaged the population in Port Mahon in 1834 
 Navy Chronicle
 Navy List
 Medical and Topographical Observations Upon the Mediterranean
: By Gustavus Richard Brown Horner