Kin Groups and Descent. The Iraqw are divided into more than 200 patrilineal clans, each named after the original founder. These clans are not localized but are spread out all over the territory, as a result of the Iraqw pattern of residence. Except for establishing rules for exogamous marriage, the clan lacks a prominent role in Iraqw daily life. The most important kinship unit within Iraqw society is the household. Communities are formed on the basis of shared space rather than shared kinship.