Kin Groups and Descent. The Iteso are a patrilineal people with three levels of patrilineal descent, each defined by the activities associated with it. The nominal clans are nonexogamous name-bearing units associated with Iteso historical narratives and ideas about the inheritance of character. Nominal clans are divided into clans, within which marriage is forbidden. These exogamous clans are further divided into lineages, with genealogies three to five generations deep, whose primary duty is to supply support and attendance on ritual occasions such as funeral rites. The more closely related descent groups are bound by ties of sentiment but also divided by intrahousehold conflicts over property, which have emerged in the late twentieth century. Descent groups are not property-holding units but do figure significantly in Iteso definitions of their social universe.
Kinship Terminology. The Iteso use Hawaiian cousin terminology with bifurcate terms for the first ascending generation and descending generation from Ego.