Nyavingi possession has had a long and varied history among the peoples who occupy the borderlands of northern Rwanda, south-western Uganda and eastern Zaire. Jim Freedman (1974, 1979), Who has studied the cult's early history and diffusion, has suggested that Nyavingi, or Nyabingi, as it is more frequently spelled, initially emerged in association with the rule of the Bashambo clan in the ancient kingdom of Ndorwa, although its role as a religious support for Bashambo rule may only date from the collapse of Ndorwa and the establishment of Bashambo kingdoms to the west of Lake Bunyoni in Kigezi and in the Mutara district of Rwanda at the end of the eighteenth century. While it is perhaps impossible to define the exact role which Nyavingi played in the Bashambo states, Freedman suggests that, at least in the successor states, Nyavingi represented a powerful spirit of a deceased female ancestor of the Bashambo. Hopkins (1969) notes, in addition, that, as a result of its support of Bashambo rule in northern Rwanda, Nyavingi became a focus of local resistance to Tutsi political expansion into the region.