Dziekanowice Echoes

Beneath the rolling fields of Greater Poland, the Dziekanowice site preserves layers of human activity. The material culture in the region is linked archaeologically to the long-lived Dziekanowice tradition of the Iron Age, but the seven radiocarbon-dated individuals from Dziekanowice-22 fall much later, between 986 and 1200 CE. This temporal gap suggests the site was reused or continued as a ritual and burial place well into the medieval period.

Archaeological data indicates continuity of landscape use: settlement traces, burial pits, and artifact types recovered nearby echo earlier occupation patterns. Limited evidence suggests that local communities maintained funerary traditions even as political and social landscapes shifted in the early medieval centuries around Gniezno and Łubowo. The small number of samples here (n = 7) means interpretations of population continuity or replacement remain provisional; further sampling would be required to test hypotheses about long-term local descent or incoming groups.

Genetic results from the seven Dziekanowice-22 individuals form a striking two-part story. The mitochondrial DNA pool (H x3, K, W, U, HV) fits well within expected European maternal diversity for the medieval period. Haplogroups H, K, W, U and HV are commonly observed across Central and Northern Europe and are consistent with long-standing maternal lineages in the region.

By contrast, the reported Y-chromosome labels — S (2), M (2), PF (1), YP (1), I1 (1) — are unexpected for Central Europe. Haplogroups labeled S and M are typically associated with South and Southeast Asian or Oceanian populations in global phylogenies; their presence here is anomalous. Possible explanations include: rare male lineages introduced by long-distance mobility or trade; labeling or reference-mismatch in haplogroup assignment pipelines; or contamination and data limitations. The single I1 instance aligns with Northern European paternal ancestry and is archaeologically plausible. With only seven samples, any interpretation of male-line ancestry is preliminary. Further sequencing, reference reanalysis, and expanded sampling are essential to clarify whether these Y-lineages reflect genuine medieval gene flow into Greater Poland or technical/artifactual signals.