Just in Europe? On a name recognition test I'll bet only about one percent of Americans know who he was. But then again any classical composer of this century would only get little more than one to ten percent of Americans knowing who they were. I can't say that I love his music, but I thought his piece on the circus was very interesting.
You are on the right track. Keep listening to other pieces he wrote. I recommend his songs. A lot of them are based on protestant hymns (with a twist). You may find those easier to stomach at first hearing.