I don't know much about the man except that there was a groundswell of support for him and against the Annie Murphy at the time. I suppose that ties in well with a country that consistently votes for one political party, whatever the social changes.
Was he originally from Cork or Galway? If the former, it would be interesting to know where from exactly. (Okay smartasses, I'll just look it up on Wikipedia. and will report back on my inevitable mild surprise.)
Originally from Kerry afaik. Back then he was popular which led to the anti Annie Murphy attitude, particularly in Galway.