He was of the Lagenians and brother of Damán, of Cluain Foda, in Fíodh-mór.
[1] Dubhán was of the Dál Cormaic, and also brother to St. Abbán moccu Corbmaic.
[2] Abbán of New Ross, a contemporary of Saint Patrick, established a monastic settlement by the banks of the River Barrow at Rosglas and gave it into the charge of his protégé Evin.
Next to nothing appears to be known of Dubhán, beyond that he seems to have been an important cleric among the Soghain in the early Irish Christian era.
It further states that it was this Dubhán who went along with St. Moling, Dubhthacht and Cúan of Cluain-mór to seek remission of the Borumha from Fínsnechta Fledach, the High-King of Ireland.