Tirerill (Tír Oirill) is a barony in east
County Sligo
County Sligo ( , ) is a Counties of Ireland, county in Republic of Ireland, Ireland. It is in the Northern and Western Region and is part of the Provinces of Ireland, province of Connacht. Sligo is the administrative capital and largest town in ...
. It corresponds to the ancient
túath
''Túath'' (plural ''túatha'') is the Old Irish term for the basic political and jurisdictional unit of Gaelic Ireland. ''Túath'' can refer to both a geographical territory as well the people who lived in that territory. The smallest ''túath ...
of
Tir Ollíol
Tir Ollíol was a túath in northwest Ireland. It was part of the confederation of Iochtar Connacht until the late 16th century. Its name is preserved by the barony (Ireland), barony of Tirerril in southeast County Sligo. It is named after Ailill ...
.
References
Baronies of County Sligo
{{Sligo-geo-stub