Bradley Surname: Y-DNA Haplogroup
Published genetics research or a documented case study links the surname Bradley to a specific Y-DNA paternal-line haplogroup.
R-M222 (reported as R1b3 in paper)
Clade R1b
Also spelled: Ó Brolcháin, MacBradley
2 of 59 modal-haplotype carriers. Note: many Bradleys in Ireland/Britain descend from unrelated English or Scottish lines, so this association applies specifically to the Ó Brolcháin-derived Ulster lineage sampled in the study, not the surname generally.
Source: Moore et al. 2006, AJHG 78(2):334-338
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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