Eugene Magennis was at times Bishop of Down and Connor"Fasti Ecclesiae Hibernicae: The succession of the prelates Volume 3" Cotton, H. pp 202/3 Dublin, Hodges & Smith, 1848–1878 during the period from 1539 to 1563.Handbook of British Chronology By Fryde, E. B;. Greenway, D.E;Porter, S; Roy, I: Cambridge, CUP, 1996 , 0713642556
A Papal appointee from 1539, and already Archdeacon of Down,"Fasti Ecclesiae Hibernicae: The succession of the prelates Volume 3" Cotton, H. p230/31 Dublin, Hodges & Smith, 1848-1878 he accepted royal supremacy and was confirmed by letters patent on 8 May 1542. Magennis retained possession during the reign of Queen Mary I; and probably attended the 1560 parliament where he took the Oath of Supremacy.
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