Ó Taithligh
Ó TAITHLIGH—I—O Talheighe, Tally, Tully, Tilly; 'descendant of Taithleach' (quiet, peaceful); also Ó Taichligh; the name (1) of a Tyrone family who were chiefs of Ui Laoghaire; and (2) of an ecclesiastical family in Fermanagh.
Alphabetical Index to Irish Surnames