Piast Surname: Y-DNA Haplogroup
Published genetics research or a documented case study links the surname Piast to a specific Y-DNA paternal-line haplogroup.
R1b-BY3549
Clade R1b
Also spelled: Piast dynasty
Archaeogenomic study of remains from eight Piast necropolises; 7 of 10 individuals confirmed (via combined archaeological, genealogical and genetic evidence) as Piasts share this rare R1b subclade, whose closest ancient relatives are from NW Europe, supporting a non-local founder for Poland's first royal dynasty (est. AD 966).
Source: Zenczak M, Handschuh L, Marcinkowska-Swojak M, et al. (2026). "Genetic genealogy of the Piast dynasty and related European royal families." Nature Communications 17:3224. doi:10.1038/s41467-026-71457-1
How to read this. A surname match means some people with that surname, in a specific study or family record, were found to share a haplogroup, most likely due to a shared patrilineal ancestor generations back. It is not proof that you personally carry that haplogroup: surnames change through adoption, remarriage, non-paternity events, and independent origin of the same name in different families. For your own confirmed haplogroup, test your DNA with our HaploAI Y-DNA/mtDNA predictor.
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