Need information on Arthur Cravan, Dada Poet/Boxer

I read about this guy in “4 Dada Suicides” and was instantly fascinated but Im looking for more info. I did some google searches and most of what I found was in French. One site claimed that his professions included poet, boxer, professor, noisician, forger, sailor, pimp, lumberjack, thief. I want the deets on this dude. Anybody know anything about him or some good sources?