Looking for information in my gg grandparents, Thomas P. and Susan Tierney. Both were born in Ireland. They were in IL in 1870, and had moved to MS by 1880. They had two sons, William T. and James H. WIlliam married Mary Frances (Fannie) Ray, settled in Carrolton, MS. Thomas P. is said to have been born on the boat (in Irish waters) as they were immigrating to the US, around 1840. The 1880 census lists his birthplace as Ireland, however. Any help appreciated. I can't find them anywhere in IL in 1870.