double unilineal descent

Double unilineal descent is a kinship system where an individual traces their lineage through both their mother's and father's families. Each lineage carries distinct rights and obligations. For instance, property inherited through the father's line might differ from that inherited through the mother's line.12

This system contrasts with unilineal descent, which emphasizes only one parent's lineage (either patrilineal through the father or matrilineal through the mother). While unilineal systems were historically studied for their role in maintaining social order in societies without formal states, double descent acknowledges the significance of both maternal and paternal connections.31