Ó Tuamáin
Ó TUAMÁIN—I—O Tumane, O Tomane, O Toman, Tooman, Tumman, Tummon, Toman, (?) Tumpane, (?) Toompane; 'descendant of Tuamán' (diminutive of Tuaim); originally a Tyrone surname; now very rare, and family long dispersed.
Alphabetical Index to Irish Surnames