Colgan tells us that he resigned the throne of Leinster in 591 (really, 592), and entered the great monastery of Kildare, where he served God for forty-eight years, becoming successively abbot of Kildare and bishop of Kildare.
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Áed Dub mac Colmáin or Áed(h) of Kildare is a former King of Leinster, and an Irish saint, commemorated by Colgan under date of 4 January; but much obscurity attaches to his life-work.
Aided by Father Hugh Ward, O.F.M., Father Stephen White, S.J., and Brother Míchél Ó Cléirigh, O.F.M., Colgan sedulously collected enormous material for the Lives of the Irish Saints, and at length, after thirty years of sifting and digesting his materials, put to press his Acta Sanctorum Hiberniae, a portion of the expense of which was defrayed by Archbishop O'Reilly of Armagh.
In the past, Trans-Colorado Airlines of Denver, CO, Royale Airlines of Shreveport, LA, Air New Orleans, of Birmingham, AL, Mid-Pacific Airlines, of Honolulu, HI, City Express, of Toronto, Ontario, Colgan Airways, of Manassas, VA, Southern Jersey Airways, of Atlantic City New Jersey, and Gull Air, of Hyannis, MA, have operated non-jet aircraft using the Continental Express brand name.
In July 2012 her Doctor Who tie-in novel Dark Horizons was published under the name J. T. Colgan.
Incidentally an injury to his understudy Colgan meant that goalkeeping coach Steve Croudson was called up to replace Arthur for at least one game before Sheffield Wednesday's Richard O'Donnell was signed.