Ó Síthigh
Ó SÍTHIGH—I—O Shihie, O Shehy, Sheehy; 'descendant of Sítheach' (peaceful); doubtless, the same as Mac Síthigh (which see), by substitution of Ó for Mac; found here and there in Munster.
Alphabetical Index to Irish Surnames
Ó SÍTHIGH—I—O Shihie, O Shehy, Sheehy; 'descendant of Sítheach' (peaceful); doubtless, the same as Mac Síthigh (which see), by substitution of Ó for Mac; found here and there in Munster.
Alphabetical Index to Irish Surnames