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| See also: | I-PF4135 Overview | R-CTS4466 Overview | R-CTS3386, R-DF27, and Kinsale |
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Driscoll Y-DNA Haplogroup Distribution
The haplogroup distribution of the project, last updated October 2020, still shows I-PF4135 > P37 subclades as over 60% and R-CTS4466 subclades as over 20%. These proportions have not changed significantly since the prior update in 2017.
Thanks to extensive SNP testing, we are now aware of more detailed breakdown under I-P37 (PF4135 in the pie chart) . I-A13665 > A13664 > A14359 contains by far not only the most Driscolls in I-P37 but in the project at large. See the overviews in the menu above.
There are some specific DNA signatures associated with some of the Eiderscel locations in the tables in Driscoll History. R1b-Leinster is associated with the Laigen people but this is not a Driscoll haplotype. The Dal Riata are R1b-Scots and having invaded Scotland are found there in large numbers; no known Driscoll of whom the project is aware are of this type and there are hardly any Driscoll born in Scotland. The Southern Uí Néill are related to Niall of the Nine Hostages and are R-M222; any Driscolls of this type are not in the project. The Eoghanacht are believed to be R1b Irish Type II. R-CTS4466 at one time was called "South Irish" but the discovery of the SNP elsewhere in the British Isles is not explained by migration out of Ireland.
The main reason for the different DNA signatures is interbreeding or non-paternal events due to such reasons as assimilation and conquering between tribes. No doubt the tribes were heterogeneous long before scribes and poets started tracking genealogies. Herein a case has been made that an independent genesis of the name Driscoll from that of the traditional progenitor is a possibility as well.
We have no conclusive evidence of a haplogroup that includes the chieftain line. We have attempted to find the O'Driscoll "heir" but have been unsuccessful. Possible cadet branches have also been investigated. That research is documented in the Family Histories.
Corca Laidhe Haplogroups
The most recent common ancestor of the O'Driscoll is said to be hEidirsceoil, born about 910 A.D., a descendant of the Corca Laidhe clan. The DNA project has revealed that there are different genetic branches to the O'Driscoll family tree. In an attempt to discover the DNA type of "The O'Driscoll" the genealogy was examined looking for a lead to a living male descendant but none could be found. Comparisons were then made with other surnames also said to be Corca Laidhe. Preliminary results show that the Driscoll are unique amongst the Corca Laidhe names:
- Within I-L161-Isles-A are over 50% of all the Driscoll who have tested but very few of the other Corca Laidhe names are of this type. About 22% of project members are R1b South Irish.
- Within R-L21-South Irish there are many Corca Laidhe names but the modal O'Driscoll haplotype differs from modals of the other names.
- In any of the other haplogroup:clades either there are either very few Driscoll or very few of the other names
- At this time it is not possible to say which clade is that of the hereditary O'Driscoll line.
In order to progress further a Corca Laidhe DNA project on the subject was created. It is hoped that a more comprehensive examination of the ancient genealogies coupled with participation of persons of other Corca Laidhe names will lead to identification of the ancestral haplotype of the hereditary line.
See also: A Preliminary Genetic Investigation of the Corca Laidhe (Colin Ferguson)
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