Colmán Már

Colmán mac Diarmato (died c. 587) was an Irish king, son of Diarmait mac Cerbaill. Early sources and older scholarship distinguish two sons of Diarmait, Colmán Bec (Colmán the Younger) and Colmán Már (Colmán the Elder), although it is now supposed that only Colmán Bec was a historical figure, Colmán Már being a later genealogical invention. There are some traces of Colmán Bec in the Irish annals, but so far as Colmán Már is concerned only his putative death is recorded.

According to the traditional account, found in genealogical sources, Diarmait mac Cerbaill had three known sons, two of whom were called Colmán. Colmán Bec's mother is said to have been Brea daughter of the Conmaicne, a Connacht people. Colmán Már's mother, Eithne, daughter of Brénainn Dall of the Conmaicne. Other sources claim that Eithne was also a wife of Diarmait's son Áed Sláine, and yet others say that she also married Áed's son Blathmac.

Both Colmáns were regarded as the founders of later dynasties. Colmán Már, to whom the genealogists gave two sons, Suibne and Fergus, was the eponymous ancestor of Clann Cholmáin, a dynasty which dominated the southern Uí Néill from the 8th century to the early 11th century, and which supplied many kings of Tara. Colmán Bec was regarded as the ancestor of the much less important dynasty of Clann Cholmáin Bic, later Caille Follamain, through a son Óengus.

The only record of Colmán Már in the annals is a report of his death in the 550s. A number of difficulties have been noted with the chronology of Colmán Már's death in relation to the floruit of his supposed sons and brothers, with the early appearance of his Latinate name, and with the record of the annals. Ailbhe Mac Shamhráin concludes "...Colmán Már is a hollow figure and looks suspiciously like an artificial creation...". It is suggested that Colmán Már was added to the genealogies in the time of Domnall Midi (died 763).

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