Who is this Vivaldi Guy?

This was the question that Salesian Fathers running a boarding school were asking in 1929 when they discovered a bunch of old music in boxes in their storage. Thus began the rediscovery of a virtually forgotten Italian Baroque composer, priest, and virtuoso violinist, Antonio Vivaldi. His manuscripts continue to resurface. http://www.youtube.com/watch?v=nGdFHJXciAQ