Uí Máil were an Irish dynasty of Leinster. They were descended from Maine Mál, the brother of the legendary high king Cathair Mór. The Uí Máil were a dominant dynasty in Leinster competing for the kingship in the 7th century before being eventually ousted by the Uí Dunlainge and retreating east from the River Liffey plain in the 8th century. They are then found along the western foothills of the Wicklow Mountains. The Glen of Imaal, named for them, appears to have been a center of their power.Ireland's History in Maps
Kings of Leinster from the Ui Mail included: Áed Dibchine mac Senaig d. 593All dates per The Chronology of the Irish Annals, Daniel P. McCarthy Crimthann mac Áedo, d. 636 Fiannamail mac Máele Tuile, d. 680 Cellach Cualann mac Gerthide, d. 715
Fiannamail was ancestor to the Uí Théig (O'Tighe) north of Uí Máil territory just west of the Wicklow mountains, while Cellach Cualann was ancestor to the Uí Ceallaig Cualann (O'Kelly) on the Dublin-Wicklow border in the foothills of the Wicklow mountains. Cuala or Cualu was the old name of a region around the foot-hills of southern Dublin.
See also Kings of Leinster Kelly the Boy from Killanne Notes
References
Ireland's History in Maps T.M.Charles-Edwards, Early Christian Ireland Francis J.Byrne, Irish Kings and High-Kings The Chronology of the Irish Annals, Daniel P. McCarthy