Celechair Ua hAirmedaig, Bishop of Clonfert, died 1186.

References http://www.ucc.ie/celt/published/T100005C/ http://www.ucc.ie/celt/published/G105007/index.html 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.