What are some martial arts that you have heard of (or preferably, come across personally) that are relatively unknown to the vast majority of the martial arts community? As an example, my old Capoeira teacher from a couple of years ago told me of a fourth style of Capoeira. The known three dictate the rhythms and speed at which movements are executed. However, she told me about a fourth style that was completely made for street fighting which was created by an old mestre, but she said he died before he could pass it on properly, and thus the style died with him. It's possible it might more well known than I think, but that is just a personal example. I wouldn't be surprised if many of the martial arts stated were of African or European descent as martial arts are commonly associated with Asia.