Piaras Mág Uidhir (Sometimes Anglicised to Peter Maguire) was a priest in Ireland during the 15th century."A New History of Ireland" T. W. Moody, F. X. Martin, F.J. Byrne and Cosgrove, A: Oxford, OUP, 1976
He was Archdeacon of Clogher from 1423 to 1432;"Fasti Ecclesiae Hibernicae: The succession of the prelates Volume 3" Cotton, H. p90 Dublin, Hodges & Smith, 1848-1878 and Bishop of Clogher from then until his resignation in 1447. He died in 1450"Clogher clergy and parishes : being an account of the clergy of the Church of Ireland in the Diocese of Clogher, from the earliest period, with historical notices of the several parishes, churches, etc" Leslie, J.B. p6: Enniskille; R.H. Ritchie; 1929
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