Suba
Suba is definitely one of the few languages on the brink of extinction. Spoken by the ethnic tribe of Abasuba in Kenya, it was dominant in the colonial and pre-colonial era as only a few people can now speak the language.
According to reports, it is confined to the two Islands of Lake Victoria, Mfangano and Rusinga and parts of Gwasi. With over 100,000 in 1992, their numbers have dwindled with death and migration.