Preprint: whole-genome sequencing probes origins of Greek-speaking community in southern Italy

Researchers have posted a preprint on bioRxiv reporting whole-genome sequencing of 27 individuals native to Grecia Salentina (GS), a cluster of villages in the Salento peninsula of southern Italy where a Greek dialect, Griko, has historically been spoken. The study aims to resolve a long-debated question in historical linguistics and archaeogenetics: whether the community descends primarily from ancient (Magna Graecia) Greek settlers, or from mediaeval Byzantine-era arrivals.

The team generated whole-genome sequence data for the 27 GS individuals and 21 controls from adjacent non-Greek-speaking areas of Puglia, embedding these within a reference panel of 799 modern individuals from across Greece and Anatolia. The authors note that the even representation of Greek and Anatolian samples in their reference is unusual in the archaeogenetics literature on this region, and may improve ancestry resolution.

The preprint is not yet peer-reviewed. No specific genomic result or conclusion is summarised in the available lede beyond the study design, so readers seeking the findings should consult the primary preprint. The work is of interest to population geneticists, historical linguists, genealogists, and researchers in Mediterranean archaeogenetics. It illustrates a broader methodological point: that genomic data, when embedded in carefully constructed reference panels, can be used to evaluate competing historical hypotheses about population origin and continuity.