Drumreilly is a civil parish in Ireland, situated partly in the baronies of Carrigallen and Dromahaire, County Leitrim and partly in the barony of Tullyhaw, County Cavan.
The earliest surviving reference to the name is c.800 in the Martyrology of Tallaght, where it is spelled Dromma Airbelaig.
[1] The parish is in an area originally called Cenel Luacháin inhabited from early times by the Conmhaícne tribe.
The reference above in the Martyrology of Tallaght is to a feast day on 15 January referring to the Seven bishops of Dromma Airbelaig, who probably lived in a monastery in the area in early Christian times.
[2] The townlands of Drumreilly civil parish in County Leitrim are: The townlands of Drumreilly civil parish in County Cavan are: