Ó Tiomáin
Ó TIOMÁIN—I—O Teman, O Tyman, Timmin, Timmins, Tymmons, Tymmins; 'descendant of Tiomán' (diminutive of tiom, soft, tender, timid); a rare Fermanagh and West Ulster surname; also found in South Leinster.
Alphabetical Index to Irish Surnames