Polyandry in Tibet
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Polyandry is a form of polygamy whereby a woman has several husbands. In Tibet, those husbands are often brothers, which is why it is most commonly called "Fraternal Polyandry". Concern over the delicate question of which children are fathered by which brother falls on the wife alone. She may or may not say who the father is because she does not wish to create conflict in the family; she may also be unsure who the biological father is. 
Historically, the social system compelled marriage within a social class.
Initially, when the People's Republic of China annexed Tibet, political systems in many regions of Tibet remained unchanged. Then starting between 1959 and 1960 political reforms changed the land ownership and taxation systems. Professor Melvyn Goldstein believed this had a direct impact on Tibet's traditional marriage system. With the change of the social stratification as a result of land ownership and taxation systems, the du-jung and the mi-bo lower classes were the first to avoid the intramarriages that characterized the older society.
However, as part of its population control measures, the Chinese government later forbade polygamous marriage altogether under family law. Even though it is currently illegal, after collective farming was phased out and the farmed land reverted in the form of long-term leases to individual families, polyandry in Tibet is de facto the norm in rural areas.
Rationale behind polyandry
Studies have attempted to explain the existence of polyandry in Tibet. One reason put forward in traditional literature is that:
- By not allowing land to be split between brothers, Tibetan families retained farms sufficiently large to continue supporting their family. A compelling socio-biological justification for polyandry is that it makes good genetic sense for brothers to raise one another's children since a brother possesses the next closest gene pool to their own.
Another reason for polyandry is that the mountainous terrain makes some of the farm land difficult to farm, requiring more physical strength. Women take multiple husbands because they are strong and able to help tend the land.
Social stratification and family structure
The Tibetan social organization under Lhasa control from the 17th century on was quasi-feudal, in that arable land was divided and owned by aristocratic families, religious organizations, and the central government and the population was subject to those district divisions. The population was further divided into social classes:
- aristocratic lords (ger-ba)
- monastics (as much as 20% of the population)
- subjects (mi-ser) consisting of:
These wealthier family units hereditarily owned estates leased from their district authority, complete with land titles. In Goldstein's research about the Gyantse district specifically, he found them owning typically from 20 acres (81,000 m2) to 300 acres (1.2 km2) of land each. Their primary civil responsibility was to pay taxes (tre-ba and khral-pa means "taxpayer"), and to supply corvée services that included both human and animal labor to their district authority. According to Goldstein, the entire family structure and marriage system were subordinated to serve the land and corporate family unit.
The family structure and marriage system of tre-ba were characterized by two fundamental principles:
- the corporate stem family; and
- the mono-marital principle.
A "stem family" is one in which a married child is inextricably linked to his natal family in a common household. The "mono-marital principle" dictates that for each and every generation, one and only one marriage is permitted collectively among all the male siblings, and the children born out of this marriage are members of the family unit who have full legal rights.
The family organization was based on these two patterns to avoid the partitioning of their estates. A generation with two or more conjugal families was seen as unstable because it could produce serious conflicts that could divide their corporate family land. As a matter of fact, Tibetan inheritance rules of family land, mainly based on agnatic links, did provide for each generation to partition the land between brothers, but this was ignored to prevent the estate unit from being threatened. Polygamous marriage, therefore arose as a solution to this potential threat.
To elucidate, let us consider a family with two or more sons. Tibetan inheritance rules gave all males of the family, the right to claim a part of the family estate, so if each son took a different bride, there would be different conjugal families, and this would lead to the partitioning of the land among the different sons' families. To avoid this situation, the solution was a fraternal polyandrous marriage, where the brothers would share a bride. Bi-fraternal polyandrous marriages were more common than tri-fraternal or quadri-fraternal polyandry, because the latter forms of marriage were often characterized by severe familial tensions (reference missing). Different mechanisms were employed to reduce the number of sons within a household, such as making one son a celibate monk, or sending away a son to become an adoptive bridegroom to a family without male children.
Another kind of marriage, although uncommon, is the "polygynous marriage". In a family where all the children were female, sisterly polygynous marriage represented the most common choice. In traditional inheritance rules, only males had rights over the land, but where there were no males to inherit them, the daughters had the right over the corporation’s land. To maintain the familial estate unit, the daughters would share a bridegroom who will move matrilocally (as opposed to the patrilocal principle where the brides move into the husband's family) and become a member of his wife's family.
Bigenerational polygamy was present as an application of the mono-marital principle. Let us consider a family in which the mother died before the son was married. If the widower remarried another woman, two conjugal families would have been created, leading to the eventual partition of the estate. Bigenerational polyandry, whereby the father shared a wife with his son, was therefore the solution to avoid this problem. Conversely, when a woman with no male offspring was widowed, she would share a husband with her daughter ("bigenerational polygyny"), thus avoiding land partitioning (reference missing).
In these mono-marital stem families, the family head, who had a dominant role in the family, was called trong bey abo (or simply abo). The abo who managed the property and resources of the family unit, was always a male, and almost invariably the oldest male of the elder generation in power. Sometimes, a younger brother would assume the abo role when the eldest male retired.
In taxpayer families, polyandrous and monogamist marriage were the more common forms of marriage, while much less widespread was the polygynous marriage. Bigenerational forms of polyandry were, however, very rare.
The householder class (du-jung or dud-chung-ba) comprised peasants who held only small plots of land that were legally and literally "individual" possessions. Land inheritance rules were different from taxpayer families, determined by the district authority and not strictly hereditary to the family unit.
The householder family structure — unlike the taxpayer families — lacked the single marriage per generation requirement to avoid land parceling. When a son married he often established a new household and split off from the original family unit. If taxpayer sons married that created succession for the family corporation and bound them to the estate for patrimonial and land reasons. Householder marriages did not incur that responsibility, and they generally married for love and were more often monogamist. The small number of polyandry cases within the householder class were limited to only the wealthier families.
The landless peasants (mi-bo) were not obligated to and did not have any heritable rights to land. Like the householders, they tended to have less polyandry than the taxpayer families.
As has been seen, fraternal polyandry was a form of marriage that was prevalent among the tre-ba class. Traditionally, marriages were arranged by the parents, often when the children were still very young. As tre-ba marriages were decided for patrimonial reasons, the brides' and bridegrooms' personal preferences were of no consequence. In polyandrous conjugal family, the eldest brother was, more often than not, the dominant person in the household. All the other brothers, however, shared the work equally, and had the right to sexual relations with their common wife, who had to treat them equally.
All children were treated equally, and a "father" was not allowed to show any favoritism, even if he knew who his biological children really were, as biological paternity was not regarded as important. Similarly, the children considered all their uncles as their fathers, and a child avoided treating members of the elder generation differently, even if they knew who their biological father was.
Divorce was quite simple. If one of the brothers in a polyandrous marriage felt displeased, he only had to leave the household. Polyandrous marriages were often characterized by tensions and clashes for a variety of different reasons. For example, conflicts might arise because a younger brother wanted to contest the authority of his eldest brother; sometimes, sexual favoritism might occur, generating tension among the male partners in the marriage, especially so when there were significant age differences among the brothers.
- Gielen, Uwe (1998). Gender roles in traditional Tibetan cultures. In L.L Adler (Ed.), International handbook on gender roles. Westport, CT: Greenwood. pp. 413–437 .
- Childs (2003) p.429
- Goldstein (1971) pp.65-66
- Goldstein, Melvyn C. (Nov 1981) New Perspectives on Tibetan Fertility and Population Decline American Ethnologist, Vol. 8, No. 4, pp. 721-738
- Childs (2003) pp.427-428
- Goldstein (May 1971) p.524
- Goldstein, Melvyn C. 1971. "Stratification, Polyandry, and Family Structure in Central Tibet", Southwestern Journal of Anthropology, 27(1): 64-74.
- Goldstein, Melvyn C. 1987. "When Brothers Share a Wife",Natural History, 96(3):109-112.
- Childs, Geoff. 2003. "Polyandry and population growth in a Historical Tibetan Society", History of the Family, 8:423–444.
- Gielen, U. P. 1998. "Gender roles in traditional Tibetan cultures". In L. L. Adler (Ed.), International handbook on gender roles (pp. 413-437). Westport, CT: Greenwood.
- Crook, John H. & Crook, Stamati. 1994. "Explaining Tibetan polyandry: Socio-cultural, Demographic, and Biological Perspectives". In: Crook, John H. & Osmaston, Henry A. (Editors), Himayalan Buddhist Villages: Environment, Resources, Society and Religious Life in Zangskar, Ladakh (pp. 735–786). Bristol, UK: University of Bristol, Bristol Classical Press. 866 pages. ISBN 0-86292-386-7.
- Goldstein, Melvyn C. 1976. "Fraternal Polyandry and Fertility", Human Ecology, 4(2): 223–233.
- Levine, Nancy E. 1988. The Dynamics of Polyandry: Kinship, Domesticity and Population on the Tibetan Border. Chicago: University of Chicago Press. 309 pages. ISBN 0-226-47569-7.
- Levine, Nancy E., & Silk, Joan. 1997. "Why Polyandry Fails: Sources of Instability in Polyandrous Marriages", Current Anthropology, 38(3): 375–398. (June 1997)