The preserved mokomokai of the Māori have long attracted attention in museums, private collections, and historical writing. At first glance, they may seem like unusual objects from another era, displayed as part of the long history of colonial collecting. But the real story behind them is far more layered than simple curiosity or display. It is a story about cultural meaning, ancestral identity, warfare, colonial fascination, and the transformation of sacred remains into trade goods during one of the most disruptive periods in New Zealand’s history.
In the American Museum of Natural History in New York City, there was once a collection of around 30 mokomokai, the preserved, tattooed heads of Māori individuals. The collection itself drew notice because of the striking visual power of facial moko and the rarity of such preserved ancestral remains. Yet what makes the collection especially important is not only what it contains, but how it came to exist in an American institution so far from the communities to which those ancestors originally belonged.
To understand that story, it is necessary to go back to the nineteenth century, when British military officer Major General Horatio Gordon Robley served in New Zealand during the New Zealand Land Wars of the 1860s.
While stationed there, Robley developed a strong interest in Māori culture, especially the tradition of facial tattooing. He was also a talented illustrator, and he began sketching the tattoo designs he observed. Over time, those sketches became the basis for his published work on the subject, and he came to be known as one of the European figures most closely associated with documenting Māori moko during the colonial period.
What fascinated Robley, and many other outsiders, was not only the visual sophistication of Māori facial tattoos, but the deeper social meaning they carried.
Among the Māori, moko were never simply decoration. They communicated ancestry, identity, status, and achievement. A moko could reflect a person’s lineage, rank, and place within the community. In many cases, facial moko were most commonly associated with men of high standing, especially those whose leadership, family background, or achievements made them socially significant. Women, too, could receive moko, although their markings were often different in placement and scale. In particular, a high-ranking woman might receive moko on the lips or chin, though such examples were less common than the extensive facial moko worn by prominent men.
Because moko signified identity and standing, the remains of a person bearing such markings could carry continuing cultural importance after death.
This is where the history of mokomokai begins.
When a person of importance died, the head might sometimes be preserved as a way of honoring that individual’s status and keeping visible the tattoo patterns that carried ancestral and social meaning. The preservation process was careful and deliberate. Soft tissue treatment and sealing methods helped maintain the form, while heat, smoke, drying, and oiling were used to stabilize the remains. The purpose was not spectacle in the modern sense. Within Māori society, preserved heads linked memory, ancestry, ritual, and status. They were not everyday objects. They were associated with ceremony and with the continuing presence of those who had held meaning within the tribal world.
Once prepared, a mokomokai would often remain with the family or community of the deceased. It might be kept in a specially made container and brought out only during important occasions, including ceremonies of remembrance or other sacred contexts. In that setting, the preserved head was not merely a preserved body part. It was an ancestral object, bound to memory, identity, and spiritual meaning.
At the same time, there were other contexts in which preserved heads appeared.
In periods of conflict between tribes, the preserved heads of opposing warriors could sometimes be retained and displayed as symbols of victory, prestige, or political leverage. These displays reflected the realities of intertribal warfare and status competition in precolonial and early colonial New Zealand. In some instances, the exchange or return of preserved heads could also become part of a peace arrangement or broader political settlement between groups. That means mokomokai occupied more than one role in Māori life: they were at once ancestral remains, political objects, and markers of social meaning.
This complex cultural history changed dramatically with the arrival of Europeans.
In the early nineteenth century, European explorers, traders, missionaries, and military figures reached New Zealand in growing numbers. Many brought with them a collector’s mindset, shaped by imperial curiosity and the expanding market for ethnographic objects. Items that Indigenous communities regarded as sacred, political, or ceremonial were often reinterpreted by Europeans as rare curiosities, valuable artifacts, or trophies of travel and empire.
Mokomokai soon became part of that colonial marketplace.
European buyers, including collectors and military men like Robley, found them fascinating. Their visual impact, combined with the intricate moko carved into the face, made them seem unlike anything in European collections. As a result, they became highly sought after. In return, Europeans offered goods that could be of enormous strategic value in New Zealand’s rapidly changing political landscape—most importantly, firearms.
This trade altered everything.
What had once been a sacred or politically significant practice within Māori society now became tied to a commercial system shaped by colonial demand. In some cases, preserved heads were exchanged for weapons, ammunition, or other goods. That trade was especially consequential during a period when access to firearms could shift the balance of power between rival groups. The result was a dangerous cycle in which outside demand and internal conflict reinforced one another.
As the market expanded, so did the pressure to supply it.
Historical accounts suggest that the trade in mokomokai became so valuable that some groups began producing preserved heads specifically for exchange rather than solely for traditional cultural purposes. In the most troubling examples, individuals of low status, captives, or enslaved people were reportedly given imitation or newly applied moko so that their heads could later be sold into the trade. In this way, the colonial market did not merely collect an existing custom. It distorted it.
That distortion lies at the center of the story.
The European demand for preserved Māori heads transformed ancestral remains into commodities. The meaning of moko, which had once marked identity and social standing, was pulled into an economy of weapons, status competition, and foreign curiosity. A practice with sacred and political dimensions became entangled in an international market that rewarded removal, display, and ownership.
Robley himself became deeply involved in this world.
Through the collecting networks of the period, he acquired a personal collection of approximately 35 mokomokai. He did not simply observe Māori facial tattooing as an artist or documentarian. He also participated in the circulation of preserved human remains that had already become objects of trade under colonial influence.
At one point, Robley offered his collection to the New Zealand government. He appears to have believed that the collection had national or historical value and should be kept within New Zealand. However, the government declined to purchase it.
As a result, the collection remained in private hands until the early 1890s, when it was acquired by the American Museum of Natural History for £1,250.
That purchase moved the collection permanently into an American institutional setting.
From a nineteenth-century museum perspective, such an acquisition might have been understood as a major contribution to anthropology or world culture. But from a modern perspective, the story raises far more difficult questions.
What does it mean for the preserved remains of Indigenous ancestors to be treated as collectible property?
What is lost when sacred or familial objects are detached from the communities that gave them meaning?
And what happens when the museum label focuses more on rarity than on the violence and disruption that made the collection possible?
These questions have become increasingly important in recent decades.
Today, mokomokai are no longer widely discussed as mere curiosities. They are understood within broader debates about colonial collecting, museum ethics, and the repatriation of ancestral remains. For Māori communities, preserved heads are not simply historical artifacts. They are ancestors. That distinction changes everything.
Where nineteenth-century collectors saw rarity, descendant communities see kinship.
Where museums once saw educational display, Indigenous groups may see displacement and unresolved historical harm.
This shift in perspective has led to efforts around the world to identify, return, and appropriately care for Māori ancestral remains held in museums and private collections. New Zealand institutions, including national and tribal authorities, have played a central role in these repatriation efforts. Over time, a growing number of mokomokai have been returned from overseas collections so they can be handled according to Māori cultural protocols and with the dignity due to ancestral remains.
That ongoing process has transformed how the history of mokomokai is told.
It is no longer enough to describe how they were made, who collected them, and where they were displayed. A complete account must also include the colonial conditions that turned them into trade objects, the museum practices that removed them from their communities, and the modern work to restore them to those communities where possible.
In that sense, the story of mokomokai is not only a story about the past.
It is also a story about the present—about how historical institutions reconsider what they hold, how nations confront colonial collecting practices, and how descendant communities reclaim authority over their own heritage.
Robley’s illustrations and writings remain part of the historical record, and they continue to interest scholars studying moko and colonial representation. But they exist within a far more complicated picture than older museum narratives once admitted. Robley was not simply a neutral observer preserving knowledge. He was also part of a colonial environment in which Māori cultural objects and human remains were removed, traded, and reclassified through European eyes.
That is why the story behind these preserved heads remains so powerful.
On the surface, it may look like a story about unusual museum objects.
In reality, it is about the meeting of two different worlds under unequal conditions.
It is about how facial tattoos that once carried genealogy, rank, and honor became entangled in colonial trade.
It is about how ancestral remains were transformed into collectible items.
And it is about how museums inherited not only the objects themselves, but also the ethical burden of how those objects were obtained.
The preserved mokomokai that once sat in museum collections were never only artifacts.
They were always tied to people.
To families.
To tribal histories.
To social systems that Europeans only partially understood and often profoundly disrupted.
That is what makes the history more unsettling than it first appears. The most important part of the story is not the shock value of preservation, nor the fascination of collectors, nor even the price paid by a major museum.
It is the fact that what was collected and displayed as exotic was, in truth, ancestral.
And once that truth is placed at the center of the story, everything else around it changes.