The identity of one of the most important rulers of the Middle Ages has now been confirmed. New scientific research indicates that the man buried in Magdeburg Cathedral is indeed Emperor Otto the Great.
The findings come after months of detailed investigation, combining archaeology, anthropology, and cutting-edge DNA analysis to answer a question that has lingered for centuries.
A Medieval Emperor at the Centre of European History
Otto I (912–973), known as Otto the Great, was one of the most influential rulers of the medieval world. As the restorer of the imperial title in Western and Central Europe, he laid the foundations for what would later become the Holy Roman Empire. His reign reshaped the political landscape of Europe, and his decision to elevate the German city of Magdeburg to an archbishopric in 968 helped transform it into a major religious and economic centre.
Since his death in 973, Otto has been buried in Magdeburg Cathedral, where his tomb has remained a focal point of historical interest. However, questions about the authenticity of the remains persisted—until now.
The current research project began not with a search for answers, but with a need for preservation. In 2024, routine monitoring revealed serious structural issues with the emperor’s tomb. Damage caused in part by earlier interventions—particularly 19th-century iron reinforcements that have since corroded—posed a growing risk to the monument.
Moisture infiltration, salt deposits, and fluctuating humidity levels within the cathedral further threatened the integrity of the sarcophagus. Faced with these challenges, authorities initiated a major conservation effort in early 2025.
To protect the site, the tomb was enclosed within a specially constructed structure, allowing specialists to carry out delicate work under controlled conditions. Detailed documentation followed, including drawings, photographs, and high-resolution 3D scans of both the monument and its damage.
As part of the conservation work, researchers lifted the sarcophagus lid—a slab weighing around 300 kilograms. Analysis revealed that it was made from marble originating from Proconnesos, modern-day Marmara Island in Turkey, indicating the reuse of ancient materials in the monument’s construction.
Beneath the lid lay a simple wooden coffin, itself in a fragile state. Scientific analysis showed that it had been constructed from pine wood in the early 13th century. The timber used for the lid was felled in the winter of 1208, suggesting that the coffin was made shortly after the cathedral fire of 1207, when Otto’s remains were likely reburied during the rebuilding of the church.
Inside the coffin, the contents were far from orderly. Over the course of several months, researchers carefully documented and removed a mixture of textiles, plant remains, sediment, and human bones.
Among the most striking finds were fragments of a red silk cloth—possibly Byzantine or Spanish in origin—and a blue blanket woven with silver threads. Other discoveries included eggshells, fruit pits, a 13th-century coin, and a piece of window glass, all indicating that the tomb had been disturbed multiple times over the centuries.
With the remains removed, scientists were able to conduct a detailed examination of the skeleton. The results offer a rare and vivid glimpse into the life of a medieval ruler.
The bones belong to a single male individual whose skeleton is nearly complete and exceptionally well preserved. Standing at approximately 180 centimetres tall, the man was significantly taller than the average person of the 10th century. His estimated age at death—between 55 and 65—closely matches historical accounts that Otto died at around 60.
Physical evidence suggests a life of activity and mobility. Strong muscle attachments on the thigh and pelvic bones indicate that he spent considerable time riding on horseback, a finding consistent with his role as a ruler and military leader.
At the same time, the skeleton reveals signs of wear and injury. Arthritic changes are visible in the knees and hips, while a healed fracture in the left forearm points to earlier trauma. The skull provides further evidence of a life marked by conflict: healed injuries are visible on both the back and front of the head, and three upper front teeth had been lost during his lifetime, possibly as a result of these injuries.
Dental analysis also identified periodontitis, a decayed tooth, and significant tartar buildup. Meanwhile, unusual features at the base of the skull and upper cervical vertebrae—specifically enlarged vascular channels—may offer clues about his health and even the cause of his death, although research into these findings is ongoing.
Dr. Mathias Becker, Senior Consultant at Magdeburg University Hospital’s Centre for Radiology and the University Clinic for Radiology and Nuclear Medicine, noted:
To be involved in the examination of Otto the Great is, for me, a unique opportunity and a great honour. From a professional perspective, the enlargement of the carotid canal at the base of the skull is particularly fascinating, as the search for the possible causes of this phenomenon directly raises questions about the emperor’s state of health at the time of his death.
Scientific analysis of the bones has also shed light on Otto’s lifestyle. Radiocarbon dating confirms that the remains belong to the correct historical period, while isotope analysis provides insight into his diet.
The results indicate a diet rich in animal protein, likely including freshwater fish, along with grains and legumes common in Central Europe. Notably absent is millet, a staple food among poorer populations of the time. This pattern reinforces the conclusion that the individual belonged to the elite.
Dr. Ronny Friedrich, Managing Director of the Curt-Engelhorn Centre for Archaeometry in Mannheim, explained:
It is fascinating that we today, with the help of radiocarbon dating and modern isotope analyses, can still obtain so much information from the bones of a person who lived more than a thousand years ago. The 14C dating confirms the historical classification of the remains, while the isotope analyses provide insights into the diet and lifestyle of the deceased. For us, it is a great scientific pleasure to be able to work with such extraordinary material – and we expect that further investigations will yield even more exciting insights into the world of the medieval elite.
While the physical and scientific evidence strongly suggested that the remains belonged to Otto I, the most decisive proof came from genetic analysis.
Researchers compared DNA samples from the Magdeburg remains with those of Emperor Henry II, a known relative whose bones are preserved in Bamberg Cathedral. The results revealed a third-degree biological relationship along the male line—exactly what would be expected based on historical records, which identify Henry II as Otto’s grand-nephew.
The conclusion is difficult to dispute. It would be extraordinarily unlikely for two unrelated individuals—both closely related in the same way—to have been mistakenly placed in the tombs of two emperors.
For researchers, one of the most striking aspects of the project is the opportunity to move beyond historical texts and encounter Otto as a physical individual.
“As a bioarchaeologist, one very rarely knows the identity of the person whose skeleton one is examining,” said Stefan Flohr of the University of Hildesheim’s Institute of Biology and Chemistry. “The fact that, in this case, it concerns such a significant historical figure makes the work all the more interesting. The focus of my analyses is the reconstruction of Otto the Great’s state of health. The current state of research suggests that, in addition to stress-related changes in the skeleton, a systemic pathological component may also be diagnosable. I am confident that, in collaboration with highly distinguished colleagues from various disciplines, we will be able to add some very ‘human’ aspects to the historical accounts of Otto the Great.”
These insights—into his health, injuries, and daily life—bring a new dimension to our understanding of a ruler who shaped medieval Europe.
What Happens Next
The remains of Otto the Great will remain in Magdeburg as conservation work continues. Plans are already in place for their reburial on 1 September 2026, in a newly designed coffin currently being developed.
Meanwhile, research into the bones is ongoing, with specialists from across multiple disciplines continuing to analyse the material. Each new discovery has the potential to deepen our understanding not only of Otto himself, but of the wider medieval world he inhabited.
The identity of one of the most important rulers of the Middle Ages has now been confirmed. New scientific research indicates that the man buried in Magdeburg Cathedral is indeed Emperor Otto the Great.
The findings come after months of detailed investigation, combining archaeology, anthropology, and cutting-edge DNA analysis to answer a question that has lingered for centuries.
A Medieval Emperor at the Centre of European History
Otto I (912–973), known as Otto the Great, was one of the most influential rulers of the medieval world. As the restorer of the imperial title in Western and Central Europe, he laid the foundations for what would later become the Holy Roman Empire. His reign reshaped the political landscape of Europe, and his decision to elevate the German city of Magdeburg to an archbishopric in 968 helped transform it into a major religious and economic centre.
Since his death in 973, Otto has been buried in Magdeburg Cathedral, where his tomb has remained a focal point of historical interest. However, questions about the authenticity of the remains persisted—until now.
A Tomb Under Threat
The current research project began not with a search for answers, but with a need for preservation. In 2024, routine monitoring revealed serious structural issues with the emperor’s tomb. Damage caused in part by earlier interventions—particularly 19th-century iron reinforcements that have since corroded—posed a growing risk to the monument.
Moisture infiltration, salt deposits, and fluctuating humidity levels within the cathedral further threatened the integrity of the sarcophagus. Faced with these challenges, authorities initiated a major conservation effort in early 2025.
To protect the site, the tomb was enclosed within a specially constructed structure, allowing specialists to carry out delicate work under controlled conditions. Detailed documentation followed, including drawings, photographs, and high-resolution 3D scans of both the monument and its damage.
Opening the Sarcophagus
As part of the conservation work, researchers lifted the sarcophagus lid—a slab weighing around 300 kilograms. Analysis revealed that it was made from marble originating from Proconnesos, modern-day Marmara Island in Turkey, indicating the reuse of ancient materials in the monument’s construction.
Beneath the lid lay a simple wooden coffin, itself in a fragile state. Scientific analysis showed that it had been constructed from pine wood in the early 13th century. The timber used for the lid was felled in the winter of 1208, suggesting that the coffin was made shortly after the cathedral fire of 1207, when Otto’s remains were likely reburied during the rebuilding of the church.
Inside the coffin, the contents were far from orderly. Over the course of several months, researchers carefully documented and removed a mixture of textiles, plant remains, sediment, and human bones.
Among the most striking finds were fragments of a red silk cloth—possibly Byzantine or Spanish in origin—and a blue blanket woven with silver threads. Other discoveries included eggshells, fruit pits, a 13th-century coin, and a piece of window glass, all indicating that the tomb had been disturbed multiple times over the centuries.
Reconstructing the Emperor
With the remains removed, scientists were able to conduct a detailed examination of the skeleton. The results offer a rare and vivid glimpse into the life of a medieval ruler.
The bones belong to a single male individual whose skeleton is nearly complete and exceptionally well preserved. Standing at approximately 180 centimetres tall, the man was significantly taller than the average person of the 10th century. His estimated age at death—between 55 and 65—closely matches historical accounts that Otto died at around 60.
Physical evidence suggests a life of activity and mobility. Strong muscle attachments on the thigh and pelvic bones indicate that he spent considerable time riding on horseback, a finding consistent with his role as a ruler and military leader.
At the same time, the skeleton reveals signs of wear and injury. Arthritic changes are visible in the knees and hips, while a healed fracture in the left forearm points to earlier trauma. The skull provides further evidence of a life marked by conflict: healed injuries are visible on both the back and front of the head, and three upper front teeth had been lost during his lifetime, possibly as a result of these injuries.
Dental analysis also identified periodontitis, a decayed tooth, and significant tartar buildup. Meanwhile, unusual features at the base of the skull and upper cervical vertebrae—specifically enlarged vascular channels—may offer clues about his health and even the cause of his death, although research into these findings is ongoing.
Dr. Mathias Becker, Senior Consultant at Magdeburg University Hospital’s Centre for Radiology and the University Clinic for Radiology and Nuclear Medicine, noted:
To be involved in the examination of Otto the Great is, for me, a unique opportunity and a great honour. From a professional perspective, the enlargement of the carotid canal at the base of the skull is particularly fascinating, as the search for the possible causes of this phenomenon directly raises questions about the emperor’s state of health at the time of his death.
Diet and Status
Scientific analysis of the bones has also shed light on Otto’s lifestyle. Radiocarbon dating confirms that the remains belong to the correct historical period, while isotope analysis provides insight into his diet.
The results indicate a diet rich in animal protein, likely including freshwater fish, along with grains and legumes common in Central Europe. Notably absent is millet, a staple food among poorer populations of the time. This pattern reinforces the conclusion that the individual belonged to the elite.
Dr. Ronny Friedrich, Managing Director of the Curt-Engelhorn Centre for Archaeometry in Mannheim, explained:
It is fascinating that we today, with the help of radiocarbon dating and modern isotope analyses, can still obtain so much information from the bones of a person who lived more than a thousand years ago. The 14C dating confirms the historical classification of the remains, while the isotope analyses provide insights into the diet and lifestyle of the deceased. For us, it is a great scientific pleasure to be able to work with such extraordinary material – and we expect that further investigations will yield even more exciting insights into the world of the medieval elite.
The DNA Breakthrough
While the physical and scientific evidence strongly suggested that the remains belonged to Otto I, the most decisive proof came from genetic analysis.
Researchers compared DNA samples from the Magdeburg remains with those of Emperor Henry II, a known relative whose bones are preserved in Bamberg Cathedral. The results revealed a third-degree biological relationship along the male line—exactly what would be expected based on historical records, which identify Henry II as Otto’s grand-nephew.
The conclusion is difficult to dispute. It would be extraordinarily unlikely for two unrelated individuals—both closely related in the same way—to have been mistakenly placed in the tombs of two emperors.
“With near certainty, we are therefore dealing here with the actual mortal remains of Emperor Otto the Great,” explains Professor Harald Meller, Director of the State Office for Heritage Management and Archaeology Saxony-Anhalt.
A Human Portrait of a Medieval Ruler
For researchers, one of the most striking aspects of the project is the opportunity to move beyond historical texts and encounter Otto as a physical individual.
“As a bioarchaeologist, one very rarely knows the identity of the person whose skeleton one is examining,” said Stefan Flohr of the University of Hildesheim’s Institute of Biology and Chemistry. “The fact that, in this case, it concerns such a significant historical figure makes the work all the more interesting. The focus of my analyses is the reconstruction of Otto the Great’s state of health. The current state of research suggests that, in addition to stress-related changes in the skeleton, a systemic pathological component may also be diagnosable. I am confident that, in collaboration with highly distinguished colleagues from various disciplines, we will be able to add some very ‘human’ aspects to the historical accounts of Otto the Great.”
These insights—into his health, injuries, and daily life—bring a new dimension to our understanding of a ruler who shaped medieval Europe.
What Happens Next
The remains of Otto the Great will remain in Magdeburg as conservation work continues. Plans are already in place for their reburial on 1 September 2026, in a newly designed coffin currently being developed.
Meanwhile, research into the bones is ongoing, with specialists from across multiple disciplines continuing to analyse the material. Each new discovery has the potential to deepen our understanding not only of Otto himself, but of the wider medieval world he inhabited.
Top Image: Photo by Mar Yung / Wikimedia Commons
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