Tireragh

Tireragh was a Gaelic territory on the Atlantic coast of northwest Connacht, ruled by the O'Dowds, descendants of the early kings of Connacht.

In 1354 Sen-Bhrian O'Dowd temporarily expelled Norman settlers from Tireragh. The clan's hereditary historians, the MacFirbises, compiled the Great Book of Lecan between 1397 and 1418, recording the inauguration of O'Dowd chiefs. By the late 16th century the O'Dowds were clients of the O'Connors of Sligo. They fought alongside Hugh Roe O'Donnell, lost most lands after defeat in 1603, and their lordship ended with the Cromwellian conquest.