Dermot or Dermond was deposed as King of Leinster in Ireland. His son Conor was blinded by an enemy in 1168, and later given as hostage to High King Roderick O'Connor. When Dermot broke his treaty with Roderick, the High King had Conor put to death.
[S1728] Wikipedia-The Free Encyclopedia, (http://en.wikipedia.org/wiki/Main_Page
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[S36] Brian Tompsett, Dept of Computer Science, University of Hull, England(B.C.Tompsett@dcs.hull.ac.uk), Directory of Royal Genealogical Data, (This work is Copyright b 1994-2002 Brian C Tompsett).