Thomas COLLIER 1802/5 swindon/Canal (General)
As Thomas COLLIER (1841 census) was a Waterman - if you look at British History on Line for Canals
http://www.british-history.ac.uk/report.aspx?compid=102816&strquery=Swindon%20glouc...
The Kennet & Avon Canal was completed to Swindon in 1804 - branches at Calne & Chippenham - it could be the family were all Watermen.
Thomas COLLIER married Betty MORTIMER - 13 April 1794 Calne
The Canal used to run through the centre of Swindon across Regent Street when I was a child.