My great-great-grandfather was a Daniel Tierney, c. 1798-1870(?). Was he the Daniel Tierney from Limerick? He and wife Ellen Tierney, c. 1808-1870(?), were both born in Ireland, but it is difficult to determine exactly when. We do know that they settled in Charlestown, Massachusetts, which was then still separately incorporated as a city in Middlesex County. They appear in the 1850 Federal Census, as do the names of their five children, all born in Massachusetts between 1836 and 1846: Mary, David, John, Thomas and Margaret.