Charting of Irish haplogroup R-L226 is now 90 %

[RobertCasey]

There are three major haplogroups that are found dominated by Irish testers: R-M222, R-L226 and R-CTS4466. Between five and ten percent of all Irish people descend from these three haplogroups. Also, these three haplogroups have between 500 and 1,000 branches under these as well due to being such prolific lines. L226 and CTS4466 are from the Munster, Ireland while M222 is located in the central and northern parts of Ireland.

Here is a chart that shows how over 600 L226 are connected to each other. L226 starts around 1,500 years ago from County Clare and includes the line of King Brian Boru (this page includes my Casey surname cluster):

http://www.rcasey.net/DNA/R_L226/Haplotrees/L226_Home.pdf#Page=39

[Moragdon]

I’ve only just come across this, but Thank you so much for adding this link and all the huge amount of info…I’ve just trawled through it.
 I cant say I understand it all yet! However, I believe it is very likely to prove helpful to my Tree as since having some DNA tested I have found a good few of these surnames in my historic Tree in Co Clare.…I’m now just trying to work through it all and learn how to understand and interpret the findings. Thank you

[hurworth]

There's been some updates to time estimates since Robert's post.  R-L226 is now estimated to have originated a little earlier around 250 AD/CE.

https://discover.familytreedna.com/y-dna/R-L226/tree