Did you have family from the Corkermain Cairncastle area c1851
Yes. I have strong evidence they did. My ancestor, John Magill (1818-1891), immigrated to the US around 1848. He initially came to Lake County, Illinois, then Cuming county Nebraska. His brothers Hugh and Patrick joined him in the US. In the 1851 Census fragment in Corkermain, Carncastle, Antrim, there is a family of James and Elizabeth Magill that I believe is their parent. DNA testing (autosomal and Y) is consistent with this conclusion, when compared to an Irish descendant of this family.