In a manner somewhat unusual in anthropological discourse, most writers on the Maa-speaking peoples of Tanzania and Kenya include an early section or chapter on what is often called “Maasai traditional history.” For example, in his pioneering work, “An Administrative Survey of the Masai Social System,” Henry Fosbrooke (1948) devotes a leading and major section to Maasai history and, in a later publication, he deals explicitly with what he calls a “tribal chronology” of the pastoral Maasai (Fosbrooke 1956a). Similarly, Thomas Beidelman, in an equally pioneering article, pays considerable attention to the historical connections of the Ilparakuyo (Baraguyu) section of the Maasai peoples of Tanzania (1960). It is among the Ilparakuyo that I have carried out most of my work in Maasai studies, and they are the primary focus of the present discussion (Rigby 1977, 1979, 1980, 1981).