Baronies were created after the Anglo-Norman invasion of Ireland as divisions of counties and were used the administration of justice and the raising of revenue. While baronies continue to be officially defined units, they have been administratively obsolete since 1898. However, they continue to be used in land registration and in specification, such as in planning permissions. In many cases, a barony corresponds to an earlier Gaelic túath which had submitted to the Crown.
From "Irish placenames database". logainm.ie (in English and Irish). Department of Community, Rural and Gaeltacht Affairs. Archived from the original on 22 April 2010. Retrieved 16 April 2010.: