There are many good folk song writers and some are also good singers. One of my favorites is Eric Bogle, already mentioned by others. Some of his songs have been sung and or recorded by so many people they have become if anything too popular, No mans land (Green fields of France or Willy McBride). Others like The band played waltzing matilda, leaving of Nancy and now I'm easy have such meaningful lyrics as to be amongst the best ever written. I have heard it said he has written in excess of 3,000 songs, although many are concerned with his home since 1969 Australia, I believe the Adelaide area, where he still appears as well as on his tours.
His web page www.ericbogle.net contains much more information.
I have never seen him live although I know a man who has and live is in his opinion exceptional. The CD i would recommend anyone purchasing if only one is required is a compilation "At this stage", look at the web page for other alternatives.
Hope many Mudcatters agree with me.
Dennis