Hi again
Not all those who were sentenced to transportation were transported at the time of their sentence. Often they were imprisoned and then transferred to a prison hulk (floating prison) to await transportation.
While investigating further for you, I've found these records of John Clish in the Prison Hulk registers (
http://www.nationalarchives.gov.uk/news/490.htm ) which shows that he was kept on two prison hulks until 1831. Then he was re-convicted and transported in 1834:
Justitia moored at Woolwich:
John Clish, aged 41, received 4 Nov 1826, convicted 16 October 1826, Durham, offence - theft of 2 shirts, transferred to Gannymede
Justitia - gaoler's reports:
1472 John Clish, disposed of - to Gannymede, Bad Character
551 Jno Clish, ?, V B (Very Bad character).
Gannymede, moored at Woolwich and Devonport:
John Clish, Age 42, convicted 16 Oct 1826, Durham. Disposed of - Pd (? pardoned) 20 Sept 1831
Justitia moored at Woolwich:John Clish, aged 51, received 26 August 1834, convicted 30 June 1834, Durham, stealing meat, etc., Disposed of - NSW 19 Sept 1834
List of British prison hulks:
http://en.wikipedia.org/wiki/List_of_British_prison_hulksHulks on the Thames:
http://www.portcities.org.uk/london/server/show/ConNarrative.56/Prison-hulks-on-the-River-Thames.html and
http://www.plumstead-stories.com/story%20-%20Prison%20hulks%20at%20Woolwich.htm and
http://www.victorianlondon.org/prisons/hulks.htmYou might be interested in other aspects of Victorian crime and punishment:
http://vcp.e2bn.org/gnu
Added - just noticed that I've misspelled Ganymede - only 1 'n'