I can't say that your Elizabeth is not part of my Callan line because I don't have much in the Callan line to go on. We were told that our Callans came from County Meath yet records indicate no Callans there, but there are plenty in County Louth. I'm still open to discovery on which county from which they really came.
My Callan line is in America by 1850. A pregnant Rosa marries in Rochester NY in 1850. Her marriage record shows her parents as Lawrence Callan and Julia O'Brien.
I later find the parents living in Tuscola Co., MI with a Christopher, who was witness to Rosa's marriage and is probably their son (her brother). A lot of people in that area of MI came over from Canada; no confirmation on what my Callans did, however.
One of Christopher's sons moves on to St. Louis and has descendants there.
Should you come up with anything on those names, please let me know. If any of those names or locations show up in your information, I would be glad to receive your details. I will keep your request in mind also as I go through records.