Kin Groups and Descent. There are named and overlapping cognatic stocks; these stocks are nonlocalized and nonexogamous and have no corporate features apart from a common tale of origin. Although village endogamy produces inwardly reticulating kin networks, there are no formal kin groupings as such. Male action sets are referred to as niinggil, notionally "brothers." Incest regulations are defined with reference to the bilateral kindred within first-cousin range. There are ritual moieties associated with the men's cult, but they operate independently of kinship.
Kinship Terminology. Telefol kin terminology is a riant of the Iroquoian type in that it departs from usual forms by differentiating patrilateral from matrilateral parallel cousins. Terms for the first ascending generation are bifurcate-collateral, with parents' same-sex siblings differentiated by seniority. Siblings are differentiated by sex and seniority and are distinguished from cousins. There are separate terms for three types of cousin: patrilateral parallel cousins, matrilateral parallel cousins, and cross cousins. All kin of descending Generations are designated by a single term, though optional distinctions can be made. In addition to these terms, Telefolmin also employ more complex terms for varying combinations of individual kin.