This paper concerns the historical and sociological significance of the traditions of certain lineage-groups residing on the eastern fringes of Lake Victoria in Kenya. These traditions have implications about the nature of pre-colonial social structure in the region, and allow the use of anthropological findings in the reconstruction of social forms through the medium of oral history.
The groups in question are to be found on the islands and adjoining southern mainland at the mouth of the Gulf of Kavirondo (see map 1). These lineages, together with others, are collectively known as the Basuba, and they inhabit in whole or in part a number of South Nyanza administrative locations and extend across the Kenyan border into Tanzania; the lineages of immediate interest here are to be found on Rusinga and Mfangano Islands, and in the mainland locations of Gembe, Kaksingiri, and Gwasi. The discussion which follows is largely based on information gathered from selected knowledgeable men on the islands, and supplementary researches conducted by the same means in the mainland areas mentioned above; five months of fieldwork were conducted in two periods in 1969 and 1973 and, unless otherwise indicated, all information below pertaining to South Nyanza is derived from that.