Heywood & Shane,
I also have James Bowley as a Bricklayer, (1851 census), they then disappear!! I presume they didn't return to England at all apart from Charlotte. Charlotte had 2 brother & a sister, which I cannot pinpoint a marriage for any of them on the English BDM's, or seem to find them on the English census's after 1851 either.
I haven't tried looking at deaths for any of them yet.
I am really curious as to why the Bowley family went over to Ireland, as the majority of people were coming to England from Ireland at that time - Weren't they

As to the information you refer to Shane, I would love it if you didn't mind, it could hold some clues/ideas, even if they aren't my direct Bowley family.
Thanks for all your input.