A dynastic elite in monumental Neolithic society

Area of Science:

• Archaeogenetics
• European Prehistory
• Social Archaeology

Background:

• Neolithic societies invested heavily in monumental construction, suggesting increased social organization.
• The scale of megalithic architecture, particularly passage tombs, implies significant societal coordination.
• Explanations for megalith construction range from cooperative ideology to hierarchical structures with elite control.

Observation:

• Analysis of 44 Neolithic Irish genomes revealed the remains of an individual from an incestuous union within the Newgrange passage tomb.
• Relatives of this individual were identified in other major passage tomb complexes, indicating a dispersed elite.
• Fine-scale haplotypic structure and dietary differences were observed between passage tomb elites and the broader Neolithic population.

Findings:

• Evidence suggests the emergence of a distinct social stratum, likely a politico-religious elite, during the Neolithic in Ireland.
• Incestuous unions are rare and historically documented among specific elite groups, such as polygynous royal families.
• The study identified rare Irish hunter-gatherer introgression within the Neolithic population, alongside evidence of maritime colonization.

Implications:

• The findings challenge purely cooperative models of megalith construction, supporting theories of social hierarchy and elite power.
• This study provides unprecedented resolution into prehistoric social structures and elite dynamics through archaeogenetics.
• The research sheds light on the complex social and demographic landscape of Neolithic Ireland, including interactions with Mesolithic populations.