Gotland hunter-graves reveal Stone Age family structures. Study of 5,500-year-old hunter-gatherer graves at Iivars on Gotland reveals family relationships DNA analysis shows children buried with woman were not her own - she was likely their father's sister or half-sister In another grave, two children buried together were not siblings but third-degree relatives (cousins)

DNA from 5,500-year-old hunter-gatherer graves on Gotland reveals unexpected family ties. A woman buried with two children—a boy and a girl—shared no biological relation to them; DNA analysis shows she was most likely their father's sister or half-sister. The two children, however, were full siblings. In another grave containing two children, DNA revealed they were third-degree relatives (cousins), not siblings. Uppsala University research shows awareness of extended lineages 🧬

Key facts:

- Study of 5,500-year-old hunter-gatherer graves at Iivars on Gotland reveals family relationships

- DNA analysis shows a woman buried with two children was not their mother—she was most likely their father's sister or half-sister

- The two children buried with the woman were confirmed as full siblings

- In another grave, two children buried together were third-degree relatives (cousins), not siblings

- 85 known graves at site, 8 contain multiple individuals

- Hunter-gatherers lived by hunting seals and fishing, genetically distinct from contemporary farmers

Key Facts

  • Study of 5,500-year-old hunter-gatherer graves at Iivars on Gotland reveals family relationships
  • DNA analysis shows children buried with woman were not her own - she was likely their father's sister or half-sister
  • In another grave, two children buried together were not siblings but third-degree relatives (cousins)
  • 85 known graves at site, 8 contain multiple individuals
  • Hunter-gatherers lived by hunting seals and fishing, genetically distinct from contemporary farmers
  • Research by Uppsala University published in Proceedings of the Royal Society Biological Sciences
  • Suggests awareness of family lineages beyond immediate family played important role in social organization

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