Reading Katie's message left me wondering about the similarity of my own ancestry. My great grandfather John Cornelius (who married Mary Flinn or Flynn) came to N.B. from Cork about 1828 with two children, Mary Ellen and Cornelius. They had at least five more children, Michael, Jeremiah, Daniel, Catherine, and Johannah. Michael, my grandfather, was born in 1835 to a girl 20 years younger, Margaret McManus, and they had 11 children, of whom my father Frank was the 8th, born 1890. The Horgans are plentiful around Saint John, N.B. We've never been able to pin down Irish origin.
Your family names are similar, and I have a lot of data on succeeding generations, John and Cornelius being passed down the chain.
Glad to hear from anybody who might be able to help.