Tullyhaw (Irish: Teallach Eathach) (which means 'The Territory of Eochaidh', an ancestor of the McGoverns, who lived c. 700 AD) is a Barony in County Cavan, Ireland. The area has been in constant occupation since pre-4000 BC
In 1579, East Breifne, then part of Connacht, was made a shire. The shire was named Cavan (Irish: An Cabhán) after the area's main town. The administration remained in the control of the local Irish dynasty and subject to the Brehon and Canon Law.
- two of which were assigned to Sir John O'Reilly and
- three to other members of the family;
- two remaining, possessed by the septs of
- Kinawley (also partly in baronies of Clanawley and Knockninny, both in County Fermanagh)