http://www.ewtn.com/library/mary/columba.htm
http://www.fordham.edu/halsall/basis/columba-e.html
http://www.irelandseye.com/irish/people/saints/columba.shtm
http://www.newadvent.org/cathen/04563b.htm
http://www.greatsite.com/timeline-english-bible-history/pre-reformation.html
http://www.newadvent.org/cathen/01173a.htm
http://www.newadvent.org/cathen/09319b.htm
http://www.newadvent.org/cathen/09520b.htm
http://www.newadvent.org/cathen/13613a.htm
http://www.newadvent.org/cathen/02758c.htm
http://www.newadvent.org/cathen/04152c.htm
http://www.newadvent.org/cathen/05394b.htm
http://www.newadvent.org/cathen/11224d.htm
http://www.newadvent.org/cathen/09520a.htm
http://www.fordham.edu/halsall/basis/columba-e.html
http://www.irelandseye.com/irish/people/saints/columba.shtm
http://www.newadvent.org/cathen/04563b.htm
http://www.greatsite.com/timeline-english-bible-history/pre-reformation.html
http://www.newadvent.org/cathen/01173a.htm
http://www.newadvent.org/cathen/09319b.htm
http://www.newadvent.org/cathen/09520b.htm
http://www.newadvent.org/cathen/13613a.htm
http://www.newadvent.org/cathen/02758c.htm
http://www.newadvent.org/cathen/04152c.htm
http://www.newadvent.org/cathen/05394b.htm
http://www.newadvent.org/cathen/11224d.htm
http://www.newadvent.org/cathen/09520a.htm