# Bilateral descent

Part of a series on the :
Anthropology of kinship :
Basic concepts
Family
Lineage
Affinity
Consanguinity
Marriage
Incest taboo
Endogamy
Exogamy
Moiety
Monogamy
Polygyny
Polygamy
Concubinage
Polyandry
Bride price
Bride service
Dowry
Parallel / cross cousins
Cousin marriage
Levirate
Sororate
Posthumous marriage
Joking relationship
Clan
Cohabitation
Fictive / Milk / Nurture kinship
Descent
Cognatic / Bilateral
Matrilateral
Lineal
Collateral
House society
Avunculate
Linealities
Ambilineality
Unilineality
Matrilineality
Patrilineality
Household forms and residence
Extended
Matrifocal
Matrilocal
Neolocal
Nuclear
Patrilocal :
Terminology
Kinship terminology
Classificatory terminologies
By group
Iroquois
Crow
Omaha
Eskimo (Inuit)
Hawaiian
Sudanese
Dravidian (debated) :
Case studies
Australian Aboriginal
Burmese
Chinese
Philippine
Polyandry in Tibet / in India
Feminist
Chambri
Mosuo
Sexuality
Coming of Age in Samoa :
Major theorists
Diane Bell
Tom Boellstorff
Jack Goody
W. D. Hamilton
Gilbert Herdt
Don Kulick
Roger Lancaster
Louise Lamphere
Eleanor Leacock
Claude Lévi-Strauss
Bronisław Malinowski
Margaret Mead
Henrietta Moore
Lewis H. Morgan
Stephen O. Murray
Michelle Rosaldo
Gayle Rubin
David M. Schneider
Marilyn Strathern :
Related articles
Alliance theory
Matrilineal / matrilocal societies
Feminist anthropology
Sex and Repression in Savage Society
Social Bonding and Nurture Kinship
"The Traffic in Women" :
Social anthropology Cultural anthropology :
vte :
Bilateral descent is a system of family lineage in which the relatives on the mother's side and father's side are equally important for emotional ties or for transfer of property or wealth. It is a family arrangement where descent and inheritance are passed equally through both parents. Families who use this system trace descent through both parents simultaneously and recognize multiple ancestors, but unlike with cognatic descent it is not used to form descent groups.
While bilateral descent is increasingly the norm in Western culture, traditionally it is only found among relatively few groups in West Africa, India, Australia, Indonesia, Melanesia, Malaysia, the Philippines, and Polynesia. Anthropologists believe that a tribal structure based on bilateral descent helps members live in extreme environments because it allows individuals to rely on two sets of families dispersed over a wide area. Historically, North Germanic peoples in Scandinavia in the Late Iron Age and Early Middle Ages had a bilateral society, where the descent of both parents were important. Genealogies featuring the legendary danish king Sigurd Snake-in-the-Eye gives him the matronymic name Áslaugsson due to his mother Aslaug's connection to Völsungs.
Under bilateral descent, every tribe member belongs to two clans, one through the father (a patriclan) and another through the mother (a matriclan). For example, among the Himba, clans are led by the eldest male in the clan. Sons live with their father's clan and when daughters marry they go to live with the clan of their husband. However inheritance of wealth does not follow the patriclan but is determined by the matriclan i.e. a son does not inherit his father's cattle but his maternal uncle's instead.
Javanese people, the largest ethnic group in Indonesia, also adopt a bilateral kinship system. Nonetheless, it has some tendency toward patrilineality.
The Dimasa Kachari people of Northeast India has a system of dual family clan. The Urapmin people, a small tribe in Papua New Guinea, have a system of kinship classes known as tanum miit. The classes are inherited bilaterally from both parents. Since they also practice strict endogamy, most Urapmin belong to all of the major classes, creating great fluidity and doing little to differentiate individuals.