Nicol Ó Duibhghiolla was Bishop of Kilmacduagh in 1419.
Nicol Ó Duibhghiolla was appointed bishop before October 1419, replacing the late Diamaid Ó Donnchadha (appointed about July 1418), but never consecrated. The see was instead held from 23 October 1419 by Seaán Ó Connmhaigh.
References
The Surnames of Ireland, Edward MacLysaght, 1978. A New History of Ireland: Volume IX - Maps, Genealogies, Lists, ed. T.W. Moody, F.X. Martin, F.J. Byrne, pp. 322–324.
External links http://www.ucc.ie/celt/published/T100005C/ http://www.irishtimes.com/ancestor/surname/index.cfm?fuseaction=Go.&UserID=