Senchineoil or Seincheinéal was the name of the early rulers, possibly pre-Gaelic, of what is now central and east County Galway and south County Roscommon, Ireland.
Overview
The term Senchineoil ( 'old' + 'people/tribe/kindred') was used by the Uí Maine to describe ('unfree, enslaved vassal peoples') who they subjugated during the founding of their kingdom sometime prior to the 5th century AD. They are described as:
"Seincheinéal of the old plain of Soghan/stretched eastward over [the river] Suck/until it reached Delbhna of Dealbhaoth; manly were the good heroes, like a flame."
It is not known by what term the Senchineoil described themselves, or even if it was in Gaelic. Their last recorded ruler was Cian d'Fhearaibh Bolg.
See also
Uí Fiachrach Aidhne Clann Fhergail Clann Taidg Delbhna Tir Dha Locha Muintir Murchada Uí Maine Soghain Trícha Máenmaige Uí Díarmata Cóiced Ol nEchmacht Síol Anmchadha Iar Connacht Maigh Seola Cenél Áeda na hEchtge Cenél Guaire Muintir Máelfináin Conmaicne Cenéoil Dubáin Conmaicne Cuile Tolad Bunrath Uí Briúin Rátha Tír Maine Uí Briúin Seola Machaire Riabhach Maigh Mucruimhe Airthir Connacht Meadraige Corca Moga Óic Bethra
References The Senchineoil and the Sogain: Differentiating between the pre-Celtic and early Celtic Tribes of Central East Galway, Joseph Mannion, Journal of the Galway Archaeological and Historical Society, Volume 58, pp. 165–170, 2006.