A man buried in Sweden in the Middle Ages era

The Viking Age in Sweden was part of a broader Norse culture that spanned from approximately the late 8th century to the early 11th century. This period was marked by a unique combination of maritime prowess, expansionist endeavors, and rich cultural expressions, deeply rooted in Norse mythology and societal structures.
Geographic and Historical Context
Geographical Setting:
- Sweden during the Viking Age was largely forested, with numerous lakes and rivers. These natural features facilitated travel and trade, enabling Vikings to embark on their notorious seafaring expeditions.
- The region was less centralized than it is today, with various tribes and clans holding power in different regions, including the Svear in Uppland and the Götar in Götaland.
Historical Timeline:
- The Viking Age is traditionally marked as beginning with the raid on Lindisfarne in 793 AD and ending with the Battle of Stamford Bridge in 1066.
- However, Sweden's Viking activity is more closely linked with Eastern Europe and the Byzantine Empire, largely due to the famous Varangian Guard and trade routes along the rivers into Russia.
Society and Culture
Social Structure:
- Society was hierarchical and consisted of classes including the chieftains and kings, nobility (jarls), free farmers (karls), and slaves (thralls).
- The Thing, a form of assembly, was integral to Viking law and politics, offering a venue for decision-making and conflict resolution.
Economy:
- Sweden's economy was based on agriculture, hunting, fishing, and trade.
- The Vikings were adept traders and established extensive trade networks that reached as far as the Middle East and North America.
- Important trade centers included Birka, an influential trading hub on Lake Mälaren.
Religion and Mythology:
- Norse paganism was the dominant religious expression, with worship centered around gods such as Odin, Thor, and Freyja.
- Vikings believed in a cosmology that included nine worlds interconnected by the World Tree, Yggdrasil.
- Rites and rituals, including sacrifices known as blóts, were fundamental to appease deities and ancestors.
Lifestyle and Living Conditions
Housing and Settlements:
- Longhouses constructed from wood and peat were the primary form of domicile, accommodating both the family and livestock.
- Settlements varied in size from isolated farmsteads to larger, more organized villages.
Clothing and Artifacts:
- Clothing was made from wool and linen, often richly decorated with intricate embroidery and metalwork.
- Vikings in Sweden are particularly noted for their exceptional craftsmanship in metalwork, especially seen in ornate weapons and jewelry.
Language and Writing:
- Old Norse was the spoken language, written using runes. Runestones, often commemorating dead family members, serve as vital historical records.
Maritime and Military Prowess
Shipbuilding:
- Swedish Vikings were known for their advanced shipbuilding techniques, capable of constructing versatile longships.
- These ships were crucial for raiding, trading, and exploration.
Military Tactics and Raids:
- Swedish Vikings were instrumental in raids across Eastern Europe, even influencing the establishment of early Rus states.
- They utilized a combination of surprise attacks, mobility offered by their ships, and alliances with local factions.
Legacy and Influence
Historical Impact:
- The Viking Age contributed to the development of a distinctive Scandinavian identity and influenced the political landscape of medieval Europe.
- Swedish Vikings, through their interactions, helped integrate disparate cultures and facilitated the spread of goods, technology, and ideas.
Cultural Legacy:
- Norse myths and legends, such as those captured in the Poetic Edda and Prose Edda, continue to fascinate and inspire contemporary literature and media.
- Archaeological sites such as the runestones and ship burials provide insight into the era's societal values and everyday life.
Transition to Post-Viking Society
- The Christianization of Sweden in the 11th century marked the end of the Viking age, as it did elsewhere in Scandinavia.
- The unified Kingdom of Sweden began to emerge, ushered in by leaders such as Olof Skötkonung, who was instrumental in Sweden's conversion to Christianity.
Through their extensive travels, trade routes, and cultural exchanges, Viking Age Swedes made a significant and lasting impact on European history, blending martial prowess with a rich tradition of mythology and exploration.
Sample ID | Culture/Period | Date | Location | Action |
---|---|---|---|---|
vik_84001 | Viking Age Sweden | 895 CE | Sigtuna. cemetery 1 (Nunnnan), Sweden | View |
vik_grt035 | Viking Age Sweden | 886 CE | Sigtuna. church 1 (St. Gertrud), Sweden | View |
vik_stg021 | Viking Age Sweden | 901 CE | Sigtuna. church 1 (St. Gertrud), Sweden | View |
vik_grt036 | Viking Age Sweden | 994 CE | Sigtuna. church 1 (St. Gertrud), Sweden | View |
vik_urm160 | Viking Age Sweden | 1040 CE | Sigtuna. church 1 (Urmakaren), Sweden | View |
vik_KAL006 | Viking Age Sweden | 900 CE | Sigtuna. cemetery 3 (Kållandet), Sweden | View |
vik_84005 | Viking Age Sweden | 900 CE | Sigtuna. cemetery 1 (Nunnnan), Sweden | View |
vik_stg026 | Viking Age Sweden | 774 CE | Sigtuna. church 1 (St. Gertrud), Sweden | View |
vik_gtm021 | Viking Age Sweden | 900 CE | Sigtuna. cemetery 4 (Götes mack), Sweden | View |
vik_urm035 | Viking Age Sweden | 995 CE | Sigtuna. church 1 (Urmakaren), Sweden | View |
vik_84035 | Viking Age Sweden | 772 CE | Sigtuna. cemetery 1 (Nunnnan), Sweden | View |
vik_kal009 | Viking Age Sweden | 900 CE | Sigtuna. cemetery 3 (Kållandet), Sweden | View |
vik_stg020 | Viking Age Sweden | 900 CE | Sigtuna. church 1 (St. Gertrud), Sweden | View |
vik_nuf002 | Viking Age Sweden | 900 CE | Sigtuna. cemetery 1 (Nunnnan), Sweden | View |
vik_kls001 | Viking Age Sweden | 900 CE | Sigtuna. cemetery 2 (Kålsängen), Sweden | View |
vik_97002 | Viking Age Sweden | 900 CE | Sigtuna. mass grave (St. Lars), Sweden | View |
vik_urm045 | Viking Age Sweden | 900 CE | Sigtuna. church 1 (Urmakaren), Sweden | View |
vik_urm161 | Viking Age Sweden | 998 CE | Sigtuna. church 1 (Urmakaren), Sweden | View |
vik_97029 | Viking Age Sweden | 900 CE | Sigtuna. mass grave (St. Lars), Sweden | View |
vik_97026 | Viking Age Sweden | 900 CE | Sigtuna. mass grave (St. Lars), Sweden | View |
vik_gtm127 | Viking Age Sweden | 900 CE | Sigtuna. cemetery 4 (Götes mack), Sweden | View |
vik_bns023 | Viking Age Sweden | 900 CE | Sigtuna. cemetery 4 (Bensinst.), Sweden | View |
vik_2072 | Viking Age Sweden | 892 CE | Sigtuna. cemetery 4 (Bensinst.), Sweden | View |
vik_2072 | 892 CE | Sigtuna. cemetery 4 (Bensinst.), Sweden | View | |
vik_84001 | 895 CE | Sigtuna. cemetery 1 (Nunnnan), Sweden | View | |
vik_84005 | 900 CE | Sigtuna. cemetery 1 (Nunnnan), Sweden | View | |
vik_84035 | 772 CE | Sigtuna. cemetery 1 (Nunnnan), Sweden | View | |
vik_97002 | 900 CE | Sigtuna. mass grave (St. Lars), Sweden | View | |
vik_97026 | 900 CE | Sigtuna. mass grave (St. Lars), Sweden | View | |
vik_97029 | 900 CE | Sigtuna. mass grave (St. Lars), Sweden | View | |
vik_bns023 | 900 CE | Sigtuna. cemetery 4 (Bensinst.), Sweden | View | |
vik_grt035 | 886 CE | Sigtuna. church 1 (St. Gertrud), Sweden | View | |
vik_grt036 | 994 CE | Sigtuna. church 1 (St. Gertrud), Sweden | View | |
vik_gtm021 | 900 CE | Sigtuna. cemetery 4 (Götes mack), Sweden | View | |
vik_gtm127 | 900 CE | Sigtuna. cemetery 4 (Götes mack), Sweden | View | |
vik_KAL006 | 900 CE | Sigtuna. cemetery 3 (Kållandet), Sweden | View | |
vik_kal009 | 900 CE | Sigtuna. cemetery 3 (Kållandet), Sweden | View | |
vik_kls001 | 900 CE | Sigtuna. cemetery 2 (Kålsängen), Sweden | View | |
vik_nuf002 | 900 CE | Sigtuna. cemetery 1 (Nunnnan), Sweden | View | |
vik_stg020 | 900 CE | Sigtuna. church 1 (St. Gertrud), Sweden | View | |
vik_stg021 | 901 CE | Sigtuna. church 1 (St. Gertrud), Sweden | View | |
vik_stg026 | 774 CE | Sigtuna. church 1 (St. Gertrud), Sweden | View | |
vik_urm035 | 995 CE | Sigtuna. church 1 (Urmakaren), Sweden | View | |
vik_urm045 | 900 CE | Sigtuna. church 1 (Urmakaren), Sweden | View | |
vik_urm160 | 1040 CE | Sigtuna. church 1 (Urmakaren), Sweden | View | |
vik_urm161 | 998 CE | Sigtuna. church 1 (Urmakaren), Sweden | View |
Sample ID | Culture/Period | Date | Location | Action |
---|---|---|---|---|
VK42 | Viking Age Sweden | 900 CE | Skara. Varnhem, Sweden | View |
VK533 | Viking Age Sweden | 800 CE | Oland, Sweden | View |
VK475 | Viking Age Sweden | 900 CE | Gotland. Kopparsvik, Sweden | View |
vik_84001 | Viking Age Sweden | 895 CE | Sigtuna. cemetery 1 (Nunnnan), Sweden | View |
vik_grt035 | Viking Age Sweden | 886 CE | Sigtuna. church 1 (St. Gertrud), Sweden | View |
VK58 | Viking Age Sweden | 900 CE | Gotland. Frojel, Sweden | View |
vik_stg021 | Viking Age Sweden | 901 CE | Sigtuna. church 1 (St. Gertrud), Sweden | View |
VK468 | Viking Age Sweden | 900 CE | Gotland. Kopparsvik, Sweden | View |
VK50 | Viking Age Sweden | 900 CE | Gotland. Kopparsvik, Sweden | View |
VK429 | Viking Age Sweden | 900 CE | Gotland. Frojel, Sweden | View |
VK303 | Viking Age Sweden | 900 CE | Skara. Varnhem, Sweden | View |
vik_grt036 | Viking Age Sweden | 994 CE | Sigtuna. church 1 (St. Gertrud), Sweden | View |
VK443 | Viking Age Sweden | 800 CE | Oland, Sweden | View |
VK433 | Viking Age Sweden | 900 CE | Gotland. Frojel, Sweden | View |
VK337 | Viking Age Sweden | 709 CE | Oland, Sweden | View |
VK29 | Viking Age Sweden | 900 CE | Skara. Varnhem, Sweden | View |
VK479 | Viking Age Sweden | 900 CE | Gotland. Kopparsvik, Sweden | View |
VK399 | Viking Age Sweden | 900 CE | Skara. Varnhem, Sweden | View |
VK474 | Viking Age Sweden | 900 CE | Gotland. Kopparsvik, Sweden | View |
VK455 | Viking Age Sweden | 900 CE | Gotland. Frojel, Sweden | View |
VK478 | Viking Age Sweden | 900 CE | Gotland. Kopparsvik, Sweden | View |
VK40 | Viking Age Sweden | 900 CE | Skara. Varnhem, Sweden | View |
VK350 | Viking Age Sweden | 677 CE | Oland, Sweden | View |
VK402 | Viking Age Sweden | 900 CE | Skara. Varnhem, Sweden | View |
VK308 | Viking Age Sweden | 900 CE | Skara. Varnhem, Sweden | View |
VK403 | Viking Age Sweden | 900 CE | Skara. Varnhem, Sweden | View |
VK332 | Viking Age Sweden | 710 CE | Oland, Sweden | View |
VK395 | Viking Age Sweden | 900 CE | Skara. Varnhem, Sweden | View |
VK404 | Viking Age Sweden | 900 CE | Skara. Varnhem, Sweden | View |
VK473 | Viking Age Sweden | 900 CE | Gotland. Kopparsvik, Sweden | View |
VK342 | Viking Age Sweden | 800 CE | Oland, Sweden | View |
VK357 | Viking Age Sweden | 899 CE | Oland, Sweden | View |
VK397 | Viking Age Sweden | 900 CE | Skara. Varnhem, Sweden | View |
VK456 | Viking Age Sweden | 900 CE | Gotland. Frojel, Sweden | View |
vik_urm160 | Viking Age Sweden | 1040 CE | Sigtuna. church 1 (Urmakaren), Sweden | View |
VK406 | Viking Age Sweden | 900 CE | Skara. Varnhem, Sweden | View |
VK353 | Viking Age Sweden | 901 CE | Oland, Sweden | View |
VK401 | Viking Age Sweden | 900 CE | Skara. Varnhem, Sweden | View |
VK398 | Viking Age Sweden | 900 CE | Skara. Varnhem, Sweden | View |
VK343 | Viking Age Sweden | 800 CE | Oland, Sweden | View |
VK346 | Viking Age Sweden | 800 CE | Oland, Sweden | View |
VK336 | Viking Age Sweden | 707 CE | Oland, Sweden | View |
VK349 | Viking Age Sweden | 690 CE | Oland, Sweden | View |
VK442 | Viking Age Sweden | 706 CE | Oland, Sweden | View |
VK34 | Viking Age Sweden | 900 CE | Skara. Varnhem, Sweden | View |
VK396 | Viking Age Sweden | 900 CE | Skara. Varnhem, Sweden | View |
vik_KAL006 | Viking Age Sweden | 900 CE | Sigtuna. cemetery 3 (Kållandet), Sweden | View |
VK333 | Viking Age Sweden | 772 CE | Oland, Sweden | View |
VK477 | Viking Age Sweden | 900 CE | Gotland. Kopparsvik, Sweden | View |
VK352 | Viking Age Sweden | 800 CE | Oland, Sweden | View |
VK355 | Viking Age Sweden | 706 CE | Oland, Sweden | View |
VK265 | Viking Age Sweden | 800 CE | Karda, Sweden | View |
VK345 | Viking Age Sweden | 800 CE | Oland, Sweden | View |
VK527 | Viking Age Sweden | 1000 CE | Uppsala. Skomsta, Sweden | View |
VK335 | Viking Age Sweden | 800 CE | Oland, Sweden | View |
VK306 | Viking Age Sweden | 900 CE | Skara. Varnhem, Sweden | View |
vik_84005 | Viking Age Sweden | 900 CE | Sigtuna. cemetery 1 (Nunnnan), Sweden | View |
VK400 | Viking Age Sweden | 900 CE | Skara. Varnhem, Sweden | View |
VK517 | Viking Age Sweden | 1000 CE | Uppsala. Skomsta, Sweden | View |
VK348 | Viking Age Sweden | 800 CE | Oland, Sweden | View |
VK405 | Viking Age Sweden | 900 CE | Skara. Varnhem, Sweden | View |
VK35 | Viking Age Sweden | 900 CE | Skara. Varnhem, Sweden | View |
VK358 | Viking Age Sweden | 705 CE | Oland, Sweden | View |
VK344 | Viking Age Sweden | 800 CE | Oland, Sweden | View |
VK56 | Viking Age Sweden | 900 CE | Gotland. Frojel, Sweden | View |
VK444 | Viking Age Sweden | 706 CE | Oland, Sweden | View |
VK266 | Viking Age Sweden | 800 CE | Karda, Sweden | View |
VK108 | Viking Age Sweden | 800 CE | Malmo. Ljungbacka, Sweden | View |
VK33 | Viking Age Sweden | 900 CE | Skara. Varnhem, Sweden | View |
VK53 | Viking Age Sweden | 900 CE | Gotland. Kopparsvik, Sweden | View |
VK354 | Viking Age Sweden | 892 CE | Oland, Sweden | View |
VK64 | Viking Age Sweden | 900 CE | Gotland. Frojel, Sweden | View |
vik_stg026 | Viking Age Sweden | 774 CE | Sigtuna. church 1 (St. Gertrud), Sweden | View |
VK51 | Viking Age Sweden | 900 CE | Gotland. Kopparsvik, Sweden | View |
VK334 | Viking Age Sweden | 901 CE | Oland, Sweden | View |
VK60 | Viking Age Sweden | 900 CE | Gotland. Frojel, Sweden | View |
vik_gtm021 | Viking Age Sweden | 900 CE | Sigtuna. cemetery 4 (Götes mack), Sweden | View |
VK30 | Viking Age Sweden | 900 CE | Skara. Varnhem, Sweden | View |
VK31 | Viking Age Sweden | 900 CE | Skara. Varnhem, Sweden | View |
VK232 | Viking Age Sweden | 900 CE | Gotland. Kopparsvik, Sweden | View |
VK309 | Viking Age Sweden | 900 CE | Skara. Varnhem, Sweden | View |
VK48 | Viking Age Sweden | 900 CE | Gotland. Kopparsvik, Sweden | View |
VK432 | Viking Age Sweden | 900 CE | Gotland. Frojel, Sweden | View |
VK460 | Viking Age Sweden | 900 CE | Gotland. Frojel, Sweden | View |
VK461 | Viking Age Sweden | 900 CE | Gotland. Frojel, Sweden | View |
VK463 | Viking Age Sweden | 900 CE | Gotland. Frojel, Sweden | View |
vik_urm035 | Viking Age Sweden | 995 CE | Sigtuna. church 1 (Urmakaren), Sweden | View |
VK434 | Viking Age Sweden | 900 CE | Gotland. Frojel, Sweden | View |
VK431 | Viking Age Sweden | 900 CE | Gotland. Frojel, Sweden | View |
VK454 | Viking Age Sweden | 900 CE | Gotland. Kopparsvik, Sweden | View |
VK452 | Viking Age Sweden | 900 CE | Gotland. Kopparsvik, Sweden | View |
VK407 | Viking Age Sweden | 900 CE | Skara. Varnhem, Sweden | View |
VK469 | Viking Age Sweden | 900 CE | Gotland. Kopparsvik, Sweden | View |
VK471 | Viking Age Sweden | 900 CE | Gotland. Kopparsvik, Sweden | View |
VK438 | Viking Age Sweden | 900 CE | Gotland. Frojel, Sweden | View |
vik_84035 | Viking Age Sweden | 772 CE | Sigtuna. cemetery 1 (Nunnnan), Sweden | View |
vik_kal009 | Viking Age Sweden | 900 CE | Sigtuna. cemetery 3 (Kållandet), Sweden | View |
vik_stg020 | Viking Age Sweden | 900 CE | Sigtuna. church 1 (St. Gertrud), Sweden | View |
VK459 | Viking Age Sweden | 900 CE | Gotland. Frojel, Sweden | View |
VK457 | Viking Age Sweden | 900 CE | Gotland. Frojel, Sweden | View |
VK430 | Viking Age Sweden | 900 CE | Gotland. Frojel, Sweden | View |
VK63 | Viking Age Sweden | 900 CE | Gotland. Frojel, Sweden | View |
VK458 | Viking Age Sweden | 900 CE | Gotland. Frojel, Sweden | View |
VK428 | Viking Age Sweden | 900 CE | Gotland. Frojel, Sweden | View |
vik_nuf002 | Viking Age Sweden | 900 CE | Sigtuna. cemetery 1 (Nunnnan), Sweden | View |
VK453 | Viking Age Sweden | 900 CE | Gotland. Kopparsvik, Sweden | View |
VK57 | Viking Age Sweden | 900 CE | Gotland. Frojel, Sweden | View |
VK268 | Viking Age Sweden | 800 CE | Karda, Sweden | View |
VK439 | Viking Age Sweden | 900 CE | Gotland. Frojel, Sweden | View |
VK217 | Viking Age Sweden | 800 CE | Malmo. Ljungbacka, Sweden | View |
vik_kls001 | Viking Age Sweden | 900 CE | Sigtuna. cemetery 2 (Kålsängen), Sweden | View |
VK424 | Viking Age Sweden | 900 CE | Skara. Varnhem, Sweden | View |
vik_97002 | Viking Age Sweden | 900 CE | Sigtuna. mass grave (St. Lars), Sweden | View |
VK450 | Viking Age Sweden | 900 CE | Gotland. Kopparsvik, Sweden | View |
VK425 | Viking Age Sweden | 900 CE | Skara. Varnhem, Sweden | View |
VK426 | Viking Age Sweden | 900 CE | Skara. Varnhem, Sweden | View |
VK39 | Viking Age Sweden | 900 CE | Skara. Varnhem, Sweden | View |
VK476 | Viking Age Sweden | 900 CE | Gotland. Kopparsvik, Sweden | View |
VK380 | Viking Age Sweden | 800 CE | Oland, Sweden | View |
VK427 | Viking Age Sweden | 900 CE | Skara. Varnhem, Sweden | View |
vik_urm045 | Viking Age Sweden | 900 CE | Sigtuna. church 1 (Urmakaren), Sweden | View |
vik_urm161 | Viking Age Sweden | 998 CE | Sigtuna. church 1 (Urmakaren), Sweden | View |
VK462 | Viking Age Sweden | 900 CE | Gotland. Frojel, Sweden | View |
vik_97029 | Viking Age Sweden | 900 CE | Sigtuna. mass grave (St. Lars), Sweden | View |
VK464 | Viking Age Sweden | 900 CE | Gotland. Frojel, Sweden | View |
vik_97026 | Viking Age Sweden | 900 CE | Sigtuna. mass grave (St. Lars), Sweden | View |
VK269 | Viking Age Sweden | 800 CE | Karda, Sweden | View |
VK440 | Viking Age Sweden | 900 CE | Gotland. Frojel, Sweden | View |
VK472 | Viking Age Sweden | 900 CE | Gotland. Kopparsvik, Sweden | View |
vik_gtm127 | Viking Age Sweden | 900 CE | Sigtuna. cemetery 4 (Götes mack), Sweden | View |
VK435 | Viking Age Sweden | 900 CE | Gotland. Frojel, Sweden | View |
VK267 | Viking Age Sweden | 800 CE | Karda, Sweden | View |
VK251 | Viking Age Sweden | 900 CE | Gotland. Kopparsvik, Sweden | View |
VK270 | Viking Age Sweden | 800 CE | Karda, Sweden | View |
VK441 | Viking Age Sweden | 900 CE | Gotland. Frojel, Sweden | View |
VK437 | Viking Age Sweden | 900 CE | Gotland. Frojel, Sweden | View |
vik_bns023 | Viking Age Sweden | 900 CE | Sigtuna. cemetery 4 (Bensinst.), Sweden | View |
VK347 | Viking Age Sweden | 800 CE | Oland, Sweden | View |
vik_2072 | Viking Age Sweden | 892 CE | Sigtuna. cemetery 4 (Bensinst.), Sweden | View |
VK467 | Viking Age Sweden | 900 CE | Gotland. Kopparsvik, Sweden | View |
VK304 | Viking Age Sweden | 900 CE | Skara. Varnhem, Sweden | View |
Ancient genetic admixture analysis compares the DNA profile of this individual (vik_97026) with present-day reference populations. These results show what percentage of the individual's genetic makeup resembles ancient populations from different geographic regions.
Modern genetic admixture analysis compares the DNA profile of this individual (vik_97026) with present-day reference populations. These results show what percentage of the individual's genetic makeup resembles modern populations from different geographic regions.
These results complement the ancient ancestry components shown in the previous section, offering a different perspective on the individual's genetic profile by comparing it with modern reference populations rather than prehistoric ancestral groups.
The G25 coordinates for the sample vik_97026 are as follows. You can analyze its admixture using G25 Studio.
vik_97026,0.13030666,0.12121438,0.06840166,0.05428396,0.03688588,0.02359966,0.00607004,0.00732906,0.00658652,-0.00541474,-0.00162794,0.00107172,-0.00234714,-0.00075976,0.01345844,0.00080306,-0.01150512,0.00607984,0.00018224,0.00138116,0.00125752,-0.0012719,0.00616588,0.00653066,0.00248764
Genomic and Strontium Isotope Variation Reveal Immigration Patterns in a Viking Age Town
The impact of human mobility on the northern European urban populations during the Viking and Early Middle Ages and its repercussions in Scandinavia itself are still largely unexplored. Our study of the demographics in the final phase of the Viking era is the first comprehensive multidisciplinary investigation that includes genetics, isotopes, archaeology, and osteology on a larger scale. This early Christian dataset is particularly important as the earlier common pagan burial tradition during the Iron Age was cremation, hindering large-scale DNA analyses. We present genome-wide sequence data from 23 individuals from the 10th to 12th century Swedish town of Sigtuna. The data revealed high genetic diversity among the early urban residents. The observed variation exceeds the genetic diversity in distinct modern-day and Iron Age groups of central and northern Europe. Strontium isotope data suggest mixed local and non-local origin of the townspeople. Our results uncover the social system underlying the urbanization process of the Viking World of which mobility was an intricate part and was comparable between males and females. The inhabitants of Sigtuna were heterogeneous in their genetic affinities, probably reflecting both close and distant connections through an established network, confirming that early urbanization processes in northern Europe were driven by migration.