Rossa mac Tomáis Óig Mág Uidhir (Sometimes Anglicised to Ross Maguire) was Bishop of Clogher"A New History of Ireland" T. W. Moody, F. X. Martin, F.J. Byrne and Cosgrove, A: Oxford, OUP, 1976 from his appointment on 21 July 1447"Fasti Ecclesiae Hibernicae: The succession of the prelates Volume 3" Cotton, H. p76 Dublin, Hodges & Smith, 1848-1878 until his death in 1483."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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