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In page John Jamison:

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He was the son of Thomas Jamison (1752/53-1811) and Rebecca (1746-1838). Thomas Jamison was a Northern Irishman, who arrived in New South Wales, Australia, with the First Fleet in 1788, aboard HMS Sirius, as a surgeon's mate. Soon afterwards, Thomas was sent to the auxiliary British colony of Norfolk Island, where he served as principal medical officer during the 1790s - while accumulating wealth on the side as a maritime trader. Then, in 1801, after taking leave in England, Thomas was promoted to the position of Surgeon-General of New South Wales due to his intelligence, administrative competence, driving ambition and gift for cultivating useful patrons in London.