« Reply #10 on: Tuesday 07 April 09 00:12 BST (UK) »
You might want to consider Canada too. I had two families go from Ireland to the United States via Canada between 1840 and 1845. Unfortunately, though, I have been unable to trace their movements until they got to the US in about 1848-49.
Wiltshire: Banks, Taylor
Somerset: Duddridge, Richards, Barnard, Pillinger
Gloucestershire: Barnard, Marsh, Crossman
Bristol: Banks, Duddridge, Barnard
Down: Ennis, McGee
Wicklow: Chapman, Pepper
Wigtownshire: Logan, Conning
Wisconsin: Ennis, Chapman, Logan, Ware
Maine: Ware, Mitchell, Tarr, Davis