Genome-wide and uniparental data from five individuals (376–57 BCE) sampled at Empúries provide a tantalizing but limited window into Hellenistic-period population dynamics on the Catalan coast. The Y-DNA results include haplogroup J in two individuals and a generic R designation in one. Haplogroup J is broadly associated in ancient contexts with eastern Mediterranean and Anatolian lineages and is commonly encountered in maritime Greek and Near Eastern-associated samples; its presence here could reflect male-mediated gene flow from eastern Mediterranean sources, whether via Greek settlers, sailors, or other travelers. The R lineage—without further subclade resolution in these data—could reflect local western European paternal ancestry, which is common across the Iberian Peninsula.
Mitochondrial DNA is dominated by haplogroup H variants (three H, one H1e, one H33), lineages that are widespread in western Europe from the Neolithic onward. The predominance of H-lineage mtDNA suggests considerable maternal continuity with local Iberian populations, or at least that female ancestry in this small sample derives primarily from lineages long-established in western Europe.
Crucially, the sample count is very small (n=5) and comes from a single necropolis, so conclusions about population structure, admixture proportions, or migration pulses must be considered preliminary. Archaeological context—Greek colonial presence, Mediterranean trade, and intermarriage—offers plausible mechanisms for the mixture of eastern-associated paternal markers and western maternal continuity observed here. Broader genomic sampling, higher-resolution Y-haplogroup assignment, and comparative analyses with contemporary Iberian and eastern Mediterranean datasets are needed to test competing scenarios of mobility and integration.