This is a very good map of the major people in Kenya, from a British daily covering the political unrest there.
This axe could well have been used here abouts too though I do think it is from further south. I like maps like this but so many books do not do this.
Looking at these current problems with a modern eye one forgets it took 1000 years for England to become truly one nation and a further 700 years to become the United kingdom.