A contradiction in DNA dating… or back to the drawing board

Recent changes to methods of dating DNA Most Recent Common Ancestor (MRCA) have moved timelines for common ancestors backwards as more data comes in… but particularly troubling is the almost 2000 year discrepancy between STR and SNP dates for the presumed-founder line Y-DNA subclade R-BY3210…. so we might be back to looking at the Iron Age rather than the medieval period for the common male-line ancestor of the clan founder. It is always possible that in this case SNP dating is less accurate than STR dating, but most everywhere else including my personal experience has shown the opposite.

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MacLeod founder line Y-DNA structure updates

With more people Y-DNA NGS testing, we have an updated structure; 4 STR clusters still exist without NGS testers to assign an SNP to them however, and many of the SNPs remain undated which makes any age estimations reliant on the less accurate STR dating methods

BY3210 copy

New MacLeod DNA branch!

Exciting news from the L165 and Clan MacLeod DNA projects, there is a new subclade to the MacLeod R1b-BY3210, and it has a famous member! The new Subclade is BY19718, and it has been found positive in a descendant of Donald MacLeod of Galtrigal “Faithful Palinurus”, the boatman who aided the rebel prince Charles Edward Stuart’s escape from the failed 1745 Jacobite Rebellion. For a rough Pop Culture reference to Prince Charlie’s escapades, see series Outlander

Some background on Donald MacLeod of Galtrigal

The SNP Pathway to the MacLeod Y-DNA block for those familiar with Y-DNA:

R1b-M269>…>P312/S116 > Z40481 > ZZ11 > DF27/S250 > Z195/S355 > Z198 > L165/S68 > FGC29987 > BY3224 > BY3253 > BY3210 (STR estimate dates 1230-1350AD most recent common ancestor (MRCA), not SNP dated yet)

MacLeod Subclade Branches:

–BY13703: Isle of Harris potential association (STR estimate date 1650AD MRCA, not SNP dated yet)

–BY19718: Donald MacLeod of Galtrigal “Palinurus”