Hehe is a language spoken in the Iringa Region, south of Gogo in Tanzania by some 750.000 people. There is no article about this language on the English Wikipedia but there is an article on the people who speak this language; the Hehe.
Even though there are many references at the back of the article, it is marked as not citing references or sources. I do agree however that this article would benefit a lot from wikifying and the creation of supporting articles. It is a good example of the amount of work that needs doing to make the English Wikipedia relevant as a resource for Africa.