Who was Barry Fitzgerald?

Barry Fitzgerald I no a lot of people will not no or even heard of this fantastic actor he was involved with so many movies/films during the early 1940s 50s but the one that will always stand out, is ' were he acted with John Wayne in the 'quiet man's if you have not seen this movie then it's about time yous did,so go on'

I ve seen him in couple films n U d no straight away he was Irish .he was very good actor