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Released by Philip Stead through the Strathclyde Institute for Genealogical Studies, University of Strathclyde
The family name Hay (plus associated spelling variants) is a prominent Anglo-Norman-in-origin surname that has been well-documented as a Scottish noble lineage since the 12th century CE. This study focuses on examining the patterns of paternal inheritance in lineages with the Hay surname. The results reveal that all descendants of William II de la HAYA, 1st of Erroll (d. 1201) derive from the multigenerational Y-SNPs R1a-YP6500 (plus equivalent SNPs BY33394/FT2017) and R1a-FTT161. Therefore, this confirms that a significant proportion of males with the surname Hay do not descend from the noble progenitor of the Scottish Hay lineage of Erroll. See the report here: https://www.mdpi.com/2313-5778/9/4/132
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Nov 19, 2025
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