Echoes of Iron Age Spain

The Spain_IA assemblage sits on a long palimpsest of Iberian prehistory. Archaeological layers at sites such as Puig de la Misericordia (Vinaròs), Puig de Sant Andreu (Ullastret) and Font de la Canya (Avinyonet del Penedés) preserve Iron Age settlement plans, funerary practices, and material exchanges dated between 786 and 100 BCE. These landscapes bear the imprint of local Late Bronze Age traditions — continuity visible in ceramic styles and settlement locations — overlaid by new impulses from the western Mediterranean.

Archaeological data indicates intensified maritime contact from the 8th century BCE: Phoenician and Greek trade networks reached the Catalan coast, while later Carthaginian and Roman interactions reshaped politics and economy. Limited evidence suggests some changes in mortuary display and imported goods correspond with this contact. The genetic record from 18 individuals provides a window into how those cultural tides may have intersected with population dynamics: a predominance of Y-DNA R lineages suggests continuation of western European paternal ancestry, while mitochondrial diversity points to more varied maternal lineages.

Caveats are important: the sample is geographically focused and moderate in size. Archaeogenetic conclusions therefore remain provisional, best read alongside stratigraphy, radiocarbon dates, and artefact provenience rather than as definitive population histories.

The Spain_IA dataset (n=18) yields a genetic portrait shaped by both continuity and contact. Eleven male individuals carry broad R-class Y-chromosome lineages — consistent with the western European dominance of R-related paternal haplogroups observed elsewhere in later prehistoric Iberia. While subclade resolution is limited in these summarized counts, archaeological context and regional patterns make R1b-related ancestries a plausible contributor, though direct assignment requires higher-resolution SNP data.

Mitochondrial diversity in this group is notable: haplogroup H appears most frequently (4 individuals) alongside J (3), H1t (2), HV (2), and H1 (1). This mix reflects maternal lineages common in western and southern Europe and suggests local continuity of female lineages combined with regional variation. Limited evidence may point to some influxes from Mediterranean source populations during the 8th–3rd centuries BCE, as trade and colonization could introduce eastern or central Mediterranean genetic inputs in small numbers; however, archaeological contacts do not always equate to large-scale gene flow.

Key caveats: the sample size is moderate and geographically clustered across several sites (Puig de la Misericordia, Puig de Sant Andreu, Mas d'en Boixos-1, Font de la Canya, Vilafamés, etc.). With n=18, population-level statements should be cautious. Future sampling, denser radiocarbon calibration, and genome-wide analysis will better resolve admixture proportions, sex-biased migration, and kinship networks hinted at by the current data.