Lineage Definition
Lineage refers to a group of people who assert a common descent from a shared ancestor. The basis upon which this descent is claimed can vary; these systems may be structured along patrilineal, matrilineal, bilateral, or non-unilineal lines.
Historical Context and Theory
Lineage theory held a central position within the field of British social anthropology during the period spanning the 1940s to the 1960s. This theoretical focus was explored extensively by key scholars, including Radcliffe-Brown, Evans-Pritchard, and M. Fortes.

