Glens emigrants often emigrated in groups

My Magill ancestors came to Lake County, Illinois at the time of the great famine and eventually moved to Nebraska. Until recently, we didn't know where exactly in Ireland we originated. There is now quite a bit of evidence that we are from Cairncastle parish.

An interesting observation is several of the surnames in the 1860 US Census in Goodale township, Lake County, Illinois include: Magill, Tweed, Darragh, Devlin, O'Boyle, McGavock, McVey. These names are all common names in the 1851 Cairncastle parish census fragment. Also, these families all were members of St. Patrick's Catholic parish in nearby McHenry County, IL. They are all found as baptism and wedding sponsors on each others sacraments. (St. Patricks also had a large group of families that were all from County Kilkenny with names like Sutton, Knox, Aylward, Keefe, Phalen, Walsh, Bolger, Powers).

Another post in these forums mentioned some families from the Glens (including McGills) that went to Prescott County, Ontario and Argenteuil county, Quebec in the 1820s.