Richard de St. Martin, Vicar of Donabate,"The History and Antiquities of the Collegiate and Cathedral Church of St. Patrick Near Dublin, from it Foundation in 1190, to the Year 1819: Comprising a Topographical Account of the Lands and Parishes Appropriated to the Community of the Cathedral, and to Its Members, and Biographical Memoirs of Its Deans" Mason, W.M. p109:Dublin, W.Folds, 1820 was DeanSt Patrick's Cathedral, Dublin of St Patrick's Cathedral, Dublin from 1250"Fasti Ecclesiae Hibernicae: The succession of the prelates Volume 2" Cotton, H. p92 Dublin, Hodges & Smith, 1848-1878 until 1275.Handbook of British Chronology By Fryde, E. B;. Greenway, D.E;Porter, S; Roy, I: Cambridge, CUP, 1996 .
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