Thomas Nachamayl (some sources N'Camail) was appointed Dean of Armagh"Fasti Ecclesiae Hibernicae: The succession of the prelates Volume 3" Cotton, H. p30 Dublin, Hodges & Smith, 1848-1878 in 1475St Patrick's Cathedral, Armagh and served until 1485.Armagh clergy and parishes : being an account of the clergy of the Church of Ireland in the Diocese of Armagh

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