HMN 2026: How Ancient Mongolian cemetery reveals power and status mattered more than blood ties

On the edge of the Mongolian steppe, overlooking where two rivers meet, lies an ancient cemetery. Buried within are two families, traced through ancient DNA across six generations, surrounded by dozens of “strangers.” The obvious assumption is that this was a family cemetery. But a recent study used machine learning and a technique borrowed from evolutionary biology to reveal that what really mattered was wealth, status and political power, not blood.

The Tamir cemetery was “driven not simply by biological kinship,” the researchers wrote in the study, published in the journal Antiquity, “but by the interplay of power, alliance and symbolic affiliation within a nomadic imperial world.”

A cemetery on the edge of an empire

At the edge of the steppe that extends into the Gobi Desert sits the Tamir cemetery. Among the interred were members of the Xiongnu, the first great nomadic empire of the Central Asian steppes and bitter rivals of China’s Han dynasty.

The Xiongnu typically structured their political hierarchy into “Left” and “Right” branches, each led by sons or close kin. However, the Left branch specifically “was traditionally associated with the ruler’s designated heir, often a son of the supreme leader, known as the Shanyu,” said Ameline Alcouffe of the University of Toulouse. Although the outlines of this system are known, how it worked in everyday life—or death—remains “elusive.”

To better understand these systems, the researchers turned to Tamir. It was founded in 100 BC after Han armies drove the Xiongnu north of the Gobi Desert and was abandoned around AD 100 as the empire collapsed. Not only is Tamir’s eastern section one of the rare fully excavated cemeteries in Mongolia, but the level of detail with which it was excavated makes it a treasure trove of information. According to Alcouffe, “This combination is rare.”

Reading a graveyard with computer models

Previous ancient DNA analysis had revealed two family lineages, labeled A and B, alongside a third unrelated group, labeled C, at Tamir. To untangle the complicated web of relations, the team combined three approaches: statistical modeling, machine learning and cultural “family tree” analysis.

The first approach grouped people to test how well grave objects predicted whether someone was related or wealthy, and how that explained where they were buried. Machine learning did something similar, but without being told who was related to whom. Finally, the “family tree” grouped cultural traditions rather than genes.

“We are not suggesting that tombs or funerary customs are inherited in the same way as genes,” Alcouffe clarified. Instead, they borrowed the math used to make evolutionary family trees and pointed it at burial customs like grave goods and body positions. “What emerges is not a biological genealogy, but a ‘map’ of cultural relationships,” Alcouffe explained.

What they found was that wealth, not blood, dictated who was buried where and with what. Families A and B may even mirror the Left and Right branches of the Xiongnu hierarchy, the researchers suggest. Most people in Lineage A had only one family member per generation buried there, suggesting siblings were buried elsewhere.

However, there is one exception: two brothers, each buried in very different ways. One was interred in one of the richest graves together with his wife, among others from family A, while the other was buried 200 meters (656 feet) away on the outskirts of the cemetery. They shared the same blood, but a different status.

In another case, a wealthy man was interred with a poor woman. Couples usually received matching treatment, but these spouses were different. Among the last graves at Tamir, their burial coincided almost exactly with the collapse of the Xiongnu around AD 85, as grave goods became scarcer and the cemetery was eventually abandoned.

According to Alcouffe, this is ultimately a “proof of concept” that a toolkit, even one modeled on evolutionary biology, can be used to examine ancient cemeteries.

“The next step will be to apply this approach to other archaeological sites with detailed funerary data sets,” Alcouffe said, “and test whether similar patterns emerge across different cultural and historical contexts.”

For now, Tamir shows that families can be more than blood and that in the Xiongnu empire, power, allegiance and rank were carried into the grave.

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