Maeineann was Bishop of Clonfert during the lifetime of Brendan, who had founded it in 553.
He was survived by Brendan, who died as Abbot of Clonfert in 576.
Maeineann is one of the earliest bishops listed within what is now County Galway.
He can be ranked as among the second or third wave of early Christians in south Connacht, after Kerrill, Conainne and Saint Connell.
This article about an Irish Catholic bishop or archbishop is a stub.