Meyer Fortes turned kinship from a catalogue of customs into a theory of social structure. Working from long fieldwork among the Tallensi of northern Ghana, he argued that in societies without centralised government it is the unilineal descent group that performs the work states elsewhere perform — holding land, settling disputes, waging feud, defining who counts as a person in law. Descent, in this account, is not merely a way of reckoning ancestry but the framework of political and jural order.
His second achievement was to insist that this framework never operates alone. The lineage is a politico-jural institution; the household is a domestic one; and much of the subtlety of Fortes's work lies in showing how the two domains interlock, how ties through the parent whose descent does not count still matter, and how the domestic group changes shape over time rather than existing in the frozen forms of a typology.
Life and intellectual formation
Fortes was born in South Africa in 1906 and came to Britain to study psychology, taking a doctorate in London before turning to social anthropology under Bronislaw Malinowski and, decisively, A. R. Radcliffe-Brown, whose structural approach to social systems he adopted and made more precise. Between 1934 and 1937 he undertook fieldwork among the Tallensi, and the two monographs that resulted — The Dynamics of Clanship among the Tallensi (1945) and The Web of Kinship among the Tallensi (1949) — are exemplary in their pairing: the first treats the public, corporate, lineage-based order, the second the intimate texture of domestic and interpersonal kinship.
With E. E. Evans-Pritchard he edited African Political Systems (1940), the volume that established the contrast between centralised states and stateless societies ordered by lineage segmentation. He succeeded Radcliffe-Brown as Professor of Social Anthropology at Cambridge in 1950 and held the chair for two decades, making Cambridge the headquarters of descent theory. His later training in psychology resurfaced in Oedipus and Job in West African Religion (1959), and his theoretical position received its fullest statement in Kinship and the Social Order (1969).
Descent theory and the unilineal descent group
Fortes's 1953 paper on the structure of unilineal descent groups is the classic statement of the position. Its argument runs as follows.
A descent group is a corporate body: it endures beyond the lives of its members, holds property and rights collectively, acts as a single unit in relation to outsiders, and is treated in jural terms as if it were a single person. Rights in land, liability for wrongs, the obligation of vengeance, succession to office and ritual functions attach to the group, not to individuals. Membership is determined at birth and is unambiguous, which is what makes the group a reliable basis for order: in a patrilineal system a child belongs to the father's lineage and to no other.
The group is segmentary. It divides into lineages of successively smaller depth, and which level is relevant depends on the situation — brothers oppose one another within the household but unite against a distant lineage, and unite with that lineage against a different clan. Fortes called this the principle of structural relativity, and it explains how large-scale coordination is achieved without any permanent central authority.
He also distinguished filiation from descent. Filiation is the relation of a child to each parent, a fact of birth. Descent is the culturally selected line through which group membership and corporate rights pass. Every child has two parents but, in a unilineal system, only one line of descent.
Complementary filiation
That distinction generates one of Fortes's most useful concepts. If descent is patrilineal, the child's tie to the mother and to the mother's kin is jurally irrelevant — and yet it is emotionally and practically central. Complementary filiation names the recognised but non-corporate significance of the link through the parent whose descent line does not confer membership.
The concept does real work. It explains the warm, indulgent, refuge-providing character of the relationship with the mother's brother in patrilineal societies, where the father's line is the locus of authority and discipline. It accounts for the internal segmentation of a patrilineage, since in a polygynous household the sons of different mothers form distinct sub-lineages — descent supplies the lineage, complementary filiation supplies its lines of cleavage. And it answered the criticism that descent theory ignored half of every person's kin, by showing that those ties were part of the model rather than an embarrassment to it.
The developmental cycle in domestic groups
The volume Fortes edited in 1958 corrected a persistent error in family studies. Census-style classification of households as nuclear, extended or joint treats as different types what are often the same group at different moments. A domestic group has a developmental cycle: it begins with a marriage, expands with the birth and growth of children, disperses as children marry and establish their own households, and is replaced as the parental generation dies and property is divided. A single household passes through several structural forms in one generation.
The methodological consequence is important. A survey finding that most households in a village are nuclear does not demonstrate the decline of the joint family, since some of those households are joint families at the phase of expansion or after partition. Indian debates on the fate of the joint family under industrialisation turned substantially on this point, and Fortes's cycle is the standard rebuttal to crude census arguments about family change.
Domestic and politico-jural domains
Fortes's mature framework, set out in Kinship and the Social Order, divides the field of kinship into two domains governed by different principles. The politico-jural domain is the public sphere of corporate groups, rights, offices and legal personality, where descent rules operate and relations are jural, authoritative and enforceable. The domestic domain is the sphere of the household, of nurture, affect and the daily reproduction of persons, where relations are governed by what he called the axiom of amity — a prescriptive altruism, an assumed obligation to give without calculation among kin.
Kinship, for Fortes, is where these two logics meet, and the tension between them is a permanent feature of social life rather than a defect in the model.
Descent versus alliance
The major theoretical controversy of mid-century kinship studies set Fortes against Claude Lévi-Strauss. For descent theorists, the fundamental unit is the corporate group formed by common ancestry, and marriage is a means by which groups recruit and reproduce themselves. For alliance theory, the fundamental fact is the exchange of women between groups, marriage is the constitutive social relation, and the prohibition of incest is the rule that compels groups into relationship with one another. Descent theory reads kinship vertically through time; alliance theory reads it horizontally across groups.
Fortes objected that alliance theory rested on ideal jural models rather than on what people were observed to do, and that it could not account for the corporate functions of lineages in stateless political systems. Edmund Leach, in turn, criticised descent theory from a different direction, holding that its models mistook the natives' own jural ideology for a description of behaviour and that its typologies collected specimens instead of explaining anything.
The debate maps unusually well onto Indian material, which is why it is examinable. North Indian kinship is broadly descent-oriented: the patrilineage and gotra are central, exogamy rules prohibit marriage within the gotra and often within the village and neighbouring villages, a bride is given away to a distant family with whom no previous tie exists, wife-takers rank above wife-givers, and no repeated alliance links the same two lines. South Indian kinship is alliance-oriented: cross-cousin and uncle-niece marriage is preferred, affinal ties are repeated across generations so that the same two lines intermarry continually, and marriage is a relation to be maintained rather than a transfer outwards. Irawati Karve mapped this contrast in Kinship Organization in India, and Louis Dumont made south Indian kinship the leading ethnographic case for treating affinity as a positive structural value in its own right. In practice both principles are present in India, and the descent-alliance debate is better used as a pair of lenses than as a choice.
Criticisms
Descent theory has been criticised as a model derived from a narrow African base and then applied too widely; Leach and later Adam Kuper argued that the lineage model was an ideological construct of the anthropologists as much as of the people studied, and that lineage organisation of the classic type is rarer than the literature suggested. Fortes's framework is faulted for being too jural and static: it explains order well and change poorly, treats colonial conditions as background noise, and has little to say about history, conflict of interest or the state. Feminist critics note that women appear in it chiefly as wives and mothers within the domestic domain, never as actors in the politico-jural one. David Schneider's later attack on the whole comparative project — that kinship as anthropologists defined it was a projection of Western folk assumptions about biological relatedness — undermined the ground on which Fortes had built.
Legacy
Even after those criticisms, Fortes's concepts survive as working tools. Complementary filiation, the developmental cycle and the distinction between domestic and politico-jural domains are used routinely by scholars who would not call themselves descent theorists, and the developmental cycle in particular reshaped how family structure is measured. His Tallensi monographs are still treated as models of ethnographic craft, and the descent-alliance debate he anchored remains the organising axis of kinship theory.
For the UPSC answer
Fortes is the name to reach for on lineage and descent, so define the corporate unilineal descent group precisely — perpetuity, collective property, jural unity, membership fixed at birth — before adding segmentation and structural relativity. Earn the higher band by using his two refinements: complementary filiation, which explains the mother's brother and the internal cleavage of a patrilineage, and the developmental cycle, which is the sharpest available answer to any question claiming that the Indian joint family is disappearing because most households are nuclear. Set him against Lévi-Strauss as descent versus alliance, and then apply that opposition to India — north Indian gotra exogamy and one-way bride-giving against south Indian cross-cousin marriage and repeated affinal ties, citing Karve and Dumont. Finish with the standard objections, that the lineage model is an African-derived jural idealisation weak on history, change and gender, so the answer evaluates the theory rather than reproducing it.
References & further reading
- Fortes, M. (1945). The Dynamics of Clanship among the Tallensi. London: Oxford University Press.
- Fortes, M. (1949). The Web of Kinship among the Tallensi. London: Oxford University Press.
- Fortes, M. (1953). The Structure of Unilineal Descent Groups. American Anthropologist, 55(1), 17–41.
- Fortes, M. (ed.) (1958). The Developmental Cycle in Domestic Groups. Cambridge: Cambridge University Press.
- Fortes, M. (1969). Kinship and the Social Order: The Legacy of Lewis Henry Morgan. Chicago: Aldine.
- Fortes, M. and Evans-Pritchard, E. E. (eds.) (1940). African Political Systems. London: Oxford University Press.