« Reply #5 on: Saturday 14 April 18 22:27 BST (UK) »
I see three Thomas Barnett's who died St Pancreas between 1841- 1851 plus a few others around London/Middlesex. So you can always research those and see if you can find a burial and see if that gives further information.
Although my first thought was did they migrate somewhere especially if you can't find any of them even if they or one of them later returned...
I did check some passenger ship lists but each time wrong spouse name and of course traveling to somewhere like Ireland would not show travel there or return, however Ireland is an unlikely place to go at that time in history although with a name like Cullen there could well be an Irish connection.
Leicestershire:Chamberlain, Dakin, Wilkinson, Moss, Cook, Welland, Dobson, Roper,Palfreman, Squires, Hames, Goddard, Topliss, Twells,Bacon.
Northamps:Sykes, Harris, Rice,Knowles.
Rutland:Clements, Dalby, Osbourne, Durance, Smith,Christian, Royce, Richardson,Oakham, Dewey,Newbold,Cox,Chamberlaine,Brow, Cooper, Bloodworth,Clarke
Durham/Yorks:Woodend, Watson,Parker, Dowser
Suffolk/Norfolk:Groom, Coleman, Kemp, Barnard, Alden,Blomfield,Smith,Howes,Knight,Kett,Fryston
Lincolnshire:Clements, Woodend