I am the great great grandson of Michael Carroll mentioned in your post.Not all went to Canada. Michael born abt 1825 came to Australia in 1858 on the Mermaid docking in Victoria Australia with his wife Honoria (Campion)
His chidren, including my great grandfather Thomas Carroll then aged 6 came out on the ship Arabia in 1860. The family settled in the Kerrie valley in the Macedon Ranges in Victoria near where I still live.

Is this of interest to anyone? Love to hear back
Cheers, Rob Carroll rob-carroll@bigpond.com