Macrobius was an Irish priest in the twelfth century. He was Archdeacon of Dublin,"Fasti Ecclesiae Hibernicae: The succession of the prelates Volume 2" Cotton, H. p. 127 Dublin, Hodges & Smith, 1848-1878 then Bishop of Glendalough."Fasti Ecclesiae Hibernicae: The succession of the prelates Volume 2" Cotton, H. p215 Dublin, Hodges & Smith, 1848-1878

See also Bishop of Glendalough

References