Ìbejì: The Twins

Ìbejì are twins, and among the Yorùbá they are the object of a specific and widespread cult. Twins are held to share one soul between two bodies, to carry unusual power, and to bring good or ill depending on how they are treated. When one twin dies, a wooden figure is carved to hold that twin's place, and the mother keeps it, washes it, feeds it, and carries it with the surviving child.

Two facts frame everything else. The Yorùbá have the highest rate of twin births recorded anywhere in the world. And the tradition of honouring twins is, on the tradition's own account, a reversal of an earlier practice of killing them.

The demography

The Yorùbá dizygotic twinning rate is documented at around 4.4 per cent of all maternities, against roughly 0.5 per cent for the world generally 1. That is close to a ninefold difference and it is a real biological phenomenon, not a cultural artefact. Igbo-Ora, a town in Oyo State, is recognised by Guinness World Records for the highest rate of twin births in the world and calls itself the twin capital 1.

The cause is not settled. Dizygotic twinning results from multiple ovulation, and the leading hypotheses involve diet, with a particular species of yam containing phytoestrogens frequently proposed, alongside genetic factors in the population. The dietary hypothesis is popular and is not conclusively established. What is established is the rate.

The demography matters for reading the religion. A society where roughly one birth in twenty-three is a twin birth is a society that has to have a settled position on twins, and it developed one.

Taiwò and Kẹ́hìndé

The names are automatic, given to every set of Yorùbá twins.

Táíwò, the first to emerge, from tọ́ ayé wò, to taste or test the world.

Kẹ́hìndé, the second, from kẹ́yìn dé, the one who arrives after.

The Yorùbá reading inverts the obvious hierarchy: Kẹ́hìndé is the senior. The explanation given is that Kẹ́hìndé, being the elder, sent Táíwò out first to test whether the world was fit, and awaited the report. Seniority in Yorùbá thought attaches to the one who deliberates and dispatches, not to the one who arrives first, and the twins' names encode that.

The child born after twins is Ìdòwú, and the one after that Àlàbá. These names are also automatic.

From killing to honouring

Yorùbá tradition holds that twins were once killed at birth, and that the practice was reversed.

This should be stated plainly rather than avoided. Twin infanticide was practised in a number of West African societies and is documented for parts of the region into the nineteenth and early twentieth centuries; among the Yorùbá the tradition's own account is that the practice was abandoned and replaced by veneration, and the narratives explaining the change vary by locality and typically involve a ruler or a diviner and a consequence that followed from the killing.

The historical details are not well established and this compiler found no authoritative dating or account. What is clear is that the tradition itself remembers a reversal, and that the present position, in which twins are honoured and their mothers are given a distinctive social status, is understood by the tradition as a correction of an earlier error. That is an unusual thing for a religious tradition to say about itself.

The mother of twins is Ìyá Ìbejì, and she has recognised standing. Historically she would sing and dance in public for the twins and receive gifts, which functioned as a form of support.

Ère ìbejì: the figure

The central practice. When a twin dies in infancy, a figure is carved to represent them, because the twins are two bodies sharing one soul and the surviving twin cannot be left half 2.

What it is. A small wooden standing figure, typically fifteen to thirty centimetres, carved as an adult rather than as an infant, with the deceased twin's sex, elaborately dressed hair, and often scarification marks corresponding to the family's. It is not a portrait; the deceased twin was a baby and the figure is an adult, because it represents what the twin would have become.

What is done with it. The mother keeps it, washes it, rubs it with oil and camwood, dresses it, feeds it, and carries it. Over years the surface acquires a deep patina from handling and oiling, and a heavily worn ère ìbejì is evidence of decades of attention. It is placed with the surviving twin, and treated as the twin.

This is the point at which the missionary description of "idolatry" is furthest from what is actually happening. A bereaved mother keeps an object representing her dead child and cares for it. Whatever else that is, it is legible.

The decline. The carving tradition has largely given way since the 1980s to photographs and to plastic dolls 2. The function persists and the medium changed. Museum collections are consequently full of ère ìbejì and the practice that produced them is much reduced. 07-arts treats the sculpture.

Are Ìbejì òrìṣà?

The classification is genuinely unclear and it is one of the places where the categories in 01-what-an-orisa-is visibly strain.

Ìbejì are described as òrìṣà in most sources, and they have a cult, offerings, and a place in the pantheon. But the object of the cult is not a single named power with a biography; it is a category of persons, and each set of twins is its own instance. The ère ìbejì is a particular dead child, which makes it closer to an ancestral figure than to an òrìṣà image.

The characteristic offerings are documented as beans, particularly ẹ̀wà, and palm oil, and twins are associated with Ṣàngó, though the basis of that association varies by account.

Diaspora counterparts

Cuba, Lucumí: Ibeyi or Jimaguas, syncretised with Saints Cosmas and Damian, the twin physician saints, whose feast is 26 September. They are child figures, given sweets and toys, and they retain the trickster-child character.

Brazil, Candomblé: Ibejis or Erês, likewise Saints Cosmas and Damian, whose day on 27 September is marked with the distribution of sweets to children, a practice visible on the streets of Salvador and Rio. In Brazilian usage erê has broadened to mean the child-spirit aspect that a possessed devotee may manifest, which is an extension beyond the Yorùbá category.

The correspondence with Cosmas and Damian is one of the tidier syncretisms in the whole system, since the Catholic saints are actually twins, and it required no stretching.

History and evolution

Oral histories and early records indicate that ancient Yorùbá communities once regarded twin births as an anomaly and practised twin infanticide, a custom shared with several neighbouring societies 4. The historical transition from infanticide to veneration is tied in oral tradition to royal interventions and divinatory counsel during the growth of the Ọ̀yọ́ Empire in the seventeenth and eighteenth centuries, which institutionalised the honouring of twins alongside the worship of Ṣàngó 4, 6.

During the nineteenth-century Yorùbá civil wars and the transatlantic slave trade, enslaved Yorùbá populations carried the veneration of Ìbejì to the Americas, where it integrated into Lucumí and Candomblé traditions 4, 5. Concurrently, European Christian missionaries arriving in Yorùbaland during the mid-nineteenth century condemned twin rituals and the carving of ère ìbejì as forms of idolatry, seeking to replace indigenous customs with Western Christian practices 4, 6. Under British colonial rule in the late nineteenth and early twentieth centuries, colonial authorities outlawed any remaining infanticide while indigenous families continued commissioning wooden ère ìbejì from local sculptors 4.

Following Nigerian independence in 1960, the material expression of the cult underwent significant changes. Economic shifts, widespread conversion to Christianity and Islam, and the advent of modern photography led many families to replace hand-carved wooden figures with studio photographs or commercially manufactured plastic dolls by the late twentieth century 4, 5. Today, while strict ritual observance has declined in urban centres, public pride in twinning remains strong. Towns such as Ìgbó-Ọrà celebrate their demographic distinction through annual cultural festivals, and the spiritual standing of twins endures across Yorùbáland and the global diaspora 4, 5.