I am trying to learn where my Cassidy's living in Scotland originated from in Ireland as in which county. My great grandfather Thomas F. Cassidy b.- about 1850s and his wife Bridget C. Murphy where married in Scotland and then immigrated to the U.S. in 1875. Thomas father was also Tom and his mother was a McBride whom married a Tierney after her husbands death. This Tom's parents where James Cassidy, and his wives maiden name was McLaughlin. I do know that my Cassidy's did not leave because of the potato famine, as it appears they left Ireland to find work in Scotland in about the 1830s.
I have been doing family research for 13 years now and I have yet to learn where my Cassidy's originated from in Ireland. I am not able to move forward until I learn what county in Ireland they come from. If anyone has information on this family please let me know.