John Pawson was appointed to the position of Assistant-Surgeon on 10 January 1810. He was appointed Assistant-Surgeon to the Crocodile in 1810.
He was employed as Surgeon on the Archduke Charles
The Archduke Charles departed Cork 15 May 1812 and arrived in New South Wales on 16 February 1813. John Pawson was regarded by the convicts on the Archduke Charles as man of good and kind feelings .
 Colonial Secretary's Letters. Main series of letters received, 1788-1825. SReel 6043; 4/1728 pp.89-90. State Records Authority of New South Wales.