Niall mac Séamuis Mac Mathghamhna, was a 15th-century priest in Ireland:[1] he was appointed Bishop of Clogher on 14 June 1484, but the papal bulls were not expedited. He died in 1488.
References
- 1."A New History of Ireland" T. W. Moody, F. X. Martin, F.J. Byrne and Cosgrove, A: Oxford, OUP, 1976 ISBN 0-19-821745-5