Milo Mac Thady O'Connor was an Irish priest in the second half of the thirteenth century“A New History of Ireland” by Theodore William Moody, F. X. Martin, Francis John Byrne, Art Cosgrove: Oxford, Oxford University Press, 1976 and was the first recorded Archdeacon of ClonmacnoiseAnnette Kehnel, Clonmacnois the Church and Lands of St. Ciarán:Change and Continuity in an Irish Monastic Foundation (6th- to 16th Century), 1995, Transaction Publishers, Rutgers – State University, USA. (recorded as holding the office in 1260)."Fasti Ecclesiae Hibernicae: The succession of the prelates Volume 4" Cotton, H. p205 Dublin, Hodges & Smith, 1848-1878
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