Question: who was nyungu ya mawe?
Answer: Mirambo was the most famous of them, but Nyungu-ya-Mawe, who was his exact contemporary (both died in 1884) was, perhaps, more successful. Nyungu created a polity which outlasted his own lifetime by more than a decade. Like Mirambo, he used a corps of professional soldiers called Ruga-ruga to carry out his conquests.