Iroquois kinship terminology, also called bifurcate-merging kinship, is one of the six major kinship-terminology systems Lewis Henry Morgan classified in 1871, named for the Haudenosaunee, Iroquois, peoples whose system was the first described of this type. It merges a parent's same-sex sibling into the parent's own kin category, so a father's brother is called 'Father' and a mother's sister is called 'Mother,' while bifurcating, or splitting off, a parent's opposite-sex sibling into a separate 'aunt' or 'uncle' category. The same logic sorts cousins: the children of a parent's same-sex sibling are 'parallel cousins,' folded into the sibling category, while the children of a parent's opposite-sex sibling are 'cross-cousins,' terminologically distinct kin. In many societies using this system, Ego was encouraged to marry a cross-cousin and discouraged or prohibited from marrying a parallel cousin, reinforcing kin-group continuity across generations through that recurring alliance. This description is adapted from Wikipedia contributors under CC BY-SA 4.0; changes were made. https://creativecommons.org/licenses/by-sa/4.0/
Facts
Descent RuleSourced to the subject's own accountCorrelates with unilineal descent generally, either matrilineal or patrilineal; documented among the historically matrilineal Haudenosaunee, for whom the system is named, but found in both matrilineal and patrilineal unilineal societies elsewhere. 1 Typical RegionSourced to the subject's own accountThe Haudenosaunee, Iroquois, of northeastern North America; also documented among Anishinaabe peoples, Algonquin, Ojibwe, Potawatomi, and related groups, most Bantu-speaking cultures of eastern and southern sub-Saharan Africa, many Melanesian societies, parts of South India and Sri Lanka, and Vanuatu. 1 Descent Rule
Descent Rule (category)Sourced to the subject's own account Descent Rule (category)Sourced to the subject's own account Connections
Associated With
In many societies using Iroquois terminology, Ego was encouraged to marry a cross-cousin and discouraged or prohibited from marrying a parallel cousin.
Source Wikipedia: Iroquois Kinship
Iroquois kinship terminology was documented by Lewis Henry Morgan from the Haudenosaunee (Iroquois) Confederacy, whose matrilineal clan system is its original ethnographic source.
Source Wikipedia: Iroquois Kinship
Named for and first described among the historically matrilineal Haudenosaunee, though the terminology pattern also occurs in patrilineal unilineal societies.
Source Wikipedia: Iroquois Kinship
In Rule Category
Entity-backed identity for the descent-rule category this kinship system already carries as an enum fact, resolved to a kinship-system entity by an explicit value-to-entity map (phase 3 bucket conversion, docs\design_entity_backed_browse_buckets_20260928.md). The enum fact itself stays on the entity unchanged.
Entity-backed identity for the descent-rule category this kinship system already carries as an enum fact, resolved to a kinship-system entity by an explicit value-to-entity map (phase 3 bucket conversion, docs\design_entity_backed_browse_buckets_20260928.md). The enum fact itself stays on the entity unchanged.
Studied By
Iroquois kinship terminology, distinguishing parallel from cross relatives, is one of the six classificatory systems Lewis Henry Morgan defined and takes its name from his own fieldwork with the Iroquois Confederacy.
Sources
1. Wikipedia: Iroquois Kinship
WikipediaMarriage section
Ego is encouraged to marry his cross-cousins but discouraged or prohibited from marrying his parallel cousins.
- Overview
- Lead
- Associated With: Matrilineal Descent
- Associated With: Cross-Cousin Marriage
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