Thanks everyone for your replies and interest.
The 1849 death age 40 and 1842 pardon is definitely not my Thomas.
I'd noticed from UK newspapers reports a surprising number of Thomas Emmetts sent to Australia in 1830s/40s from Lancashire. Very confusing.
Sparrett - I don't think he died on the voyage. The NSW convict indent lists all convicts who arrived on ship Hive from England on 11 June 1834, and Thomas is listed.
Ancestry has this record from:
New South Wales, Australia, Settler and Convict Lists, 1787-1834
Convicts arrived 1833-1834
Thomas Emett
Date of arrival; 11 June, 1834, per ship Hive
Sentence: Life
How disposed of: Henry O'Brien, Yass Plains
Very annoyingly I can only access this record on Ancestry by using the spelling "Emett" - nothing under Emmett
Judith
That is my Thomas!! I can't find this on Ancestry, maybe outside my subscription from UK. Is that the full entry? Wonder what "How disposed of" means?
I can't access Australian Archives website at the moment, the website site seems to be down.
Thanks everyone.
Malcolm