Echu Tirmcharna mac Fergusso (died ca. 556) was a king of Connacht from the Uí Briúin branch of the Connachta. Genealogically he is mentioned as the great-great grandson of Dauí Tenga Uma (d. 500) a previous king. Prof. Byrne believes that the early Uí Briúin genealogies are fabricated however.Francis J.Byrne, Irish Kings and High-Kings, pg.245 His place in the king lists falls between the reign of Ailill Inbanda (d. 549) and of his son Áed mac Echach Tirmcharna (d. 575).Book of Leinster, Section 30 The Annals of Tigernach simply mention him as king in 556 and his son's accession to the throne in 557.all dates per The Chronology of the Irish Annals, Daniel P. McCarthy
A Poem on the Kings of Connaught describes him as Echu "dryflesh", the "choice man", and also as noble.
Notes
See also Kings of Connacht
References
Annals of Tigernach T.M. Charles-Edwards, Early Christian Ireland Francis J. Byrne, Irish Kings and High-Kings Book of Leinster, Section 30 The Chronology of the Irish Annals, Daniel P. McCarthy
External links CELT: Corpus of Electronic Texts at University College Cork