Ó Flaitheamháin
Ó FLAITHEAMHÁIN—I—O Flaghavane, O Flahevane, O Flavane, Flahavan, Flahevan, Flahavin, Flavahan, Flavin; 'descendant of Flaitheamhán' (diminutive of flaitheamh, lord, ruler); an old Munster surname; often found as Ó Flathamháin and Ó Flaithimhín, which see.
Alphabetical Index to Irish Surnames