Sotomayor Surname: Y-DNA Haplogroup
Published genetics research or a documented case study links the surname Sotomayor to a specific Y-DNA paternal-line haplogroup.
R-BY33880
Clade R1b (DF41/CTS2501 subclade of R1b-L21)
Also spelled: Soto, Soto de las Cuevas, Lugo Sotomayor, Gonzalez de la Cruz (documented as one agnatic line recorded under different surnames per Spanish maternal-surname custom)
BigY-500/700 testing of militia-officer descendants confirmed a shared R-DF41 lineage (final SNP R-BY33880) among four Puerto Rican surname branches, converging on Captain Pedro Mexia de Lugo and Isabel de Sotomayor (m. c.1573) and, per the author's earlier 2019 study, on the Froilaz/Trava family of 9th-11th century Galicia. DF41 is concentrated among men whose ancestry traces to Celtic-identity nations/regions (Ireland, Scotland, Wales, Cornwall, Galicia).
Source: Sotomayor A. "Blood and Paper: Connections between the Sotomayor, Gonzalez de la Cruz, Soto de las Cuevas, and Lugo Sotomayor from Puerto Rico from the Sixteenth to the Eighteenth Centuries." Journal of Genetic Genealogy 10(1), 2022.
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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