Uí Cheinnselaig

The Uí Cheinnselaig, from the "grandsons of Cennsalach", were an   of  who traced their descent from, a supposed contemporary of. Énda was said to be a grandson of and a first cousin of, ous ancestor  of the rival.

The earliest associations of the Uí Cheinnselaig are with the region around, , and the headwaters of the , but in time the centre of their power was pushed southwards, later being found around , in , site of the monastery of (d. 626).

In early times the came from the Uí Cheinnselaig and the Uí Dúnlainge, but the Uí Dúnlainge came to dominate the kingship of the province, and after  (d. 738) it was three hundred years until the next Uí Cheinnselaig king of Leinster,.

Notable kings of the Uí Cheinnselaig and related kindreds included:


 * (died 605x608)
 * (died 738)
 * (died 1072)
 * (died 1171)
 * (died 1417)