James & Theresa Mangan Mahon from Cork, were in OH by 1860 with sons Michael (1853) & Edward (1855) as daug. Mary was born there. They were on the 1860 census in MI. I do not know the departure port, arrival port,, date, or ship they came on. I have checked checked many ports & ships lists with no luck. Can anyone help me locate this info? Bettye