Gregorius Ó Leaáin

Nicol Ó Leaáin, Bishop of Kilmacduagh, from 1394 to 1397. Ó Leaáin (O'Leane, Lane, Linnane) is associated with the Oranmore-Clarenbridge area of County Galway.

Ó Leaáin was appointed 14 October 1393 and consecrated c. 1394; confirmed bishop 30 August 1396. He died 1397. The see remained vacant until the appointment of Énri Ó Connmhaigh, Bishop of Clonfert, in March 1405.