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This project is for people who have tested and been assigned the paternal haplogroup I2a2a1 (M284) and also for people who are believed to have belonged to this paternal haplogroup based on tests done on descendants.
Formerly: I2b1a
Defining Mutations
- M284
Origin
I2b1a (M284) has been found almost exclusively among the population of Great Britain, suggesting that the clade may have arisen in that island. I2b1a is comparatively rare in Ireland. Where it is found in those of Irish descent with Gaelic surnames, and particularly in baronial families with a credible pedigree back to a Cruithin (British) origin, this suggests an ancestor who arrived in Ireland from Celtic Britain. For example it is found in McGuinness and McCartan men descended from the Uí Echach Cobha, a lineage considered Cruithin in the 6th century AD
Distribution
Y-haplogroup I2b1a is a typical British subclade of I.
Added by Tom Luce of Bethel, Ohio
Original Message
> From: y-dna-haplogroup-i-bounces@rootsweb.com
> [mailto:y-dna-haplogroup-i-bounces@rootsweb.com] On Behalf Of Ken
> Nordtvedt
> Sent: Friday, July 17, 2009 10:43 PM
> To: Y-DNA-HAPLOGROUP-I-L@rootsweb.com; GENEALOGY-DNA-L@rootsweb.com
> Subject: [yDNAhgI] Old Split between I2b1a-Isles-Eng 1 & 2
>
> Last week I mentioned I found that the English clade of I2b1a M284+
> split into two clades.
>
> I made an age estimate tonight for the node when these two clades,
> English1 and English2 split. It turned out 6000 years --- quite old.
> Some others, who get rid of some STRS when doing variance age estimates,
> would find an even greater age for the split.
>
> The two English clades each have coalescence ages somewhat in excess of
> 3000 years. I2b1a1-Isles-Scot on the other hand is fairly young ---
> about 1500 years.
>
> So given the antiquity of English clade 1 and English clade 2, there is
> added reason for English clade people to do the two new snps found
> downstream of M284. They could possibly divide English1 from English2
> just as they have divided English from Scot clades.
>
> So folks in M284+ please consider the two brand new snps
>
> L126 and L137 at ftdna
> a.k.a. S165 and S166 at Ethnoancestry
>
> so we can learn more about this haplogroup which is almost only found in
> the British Isles today, but certainly has some history to be learned
> concerning how it got there from the continent. There is circumstantial
> evidence that M284+ got to the Isles either from Iberia or from the
> north German plain, arriving in the British Isles certainly earlier than
> the Romans did.
>
> Ken
>
> -------------------------------
== Subclades of I ==
- I - I-M170
- I1 - I-M253
- I2 - I-M438
- I2a1 - I-P37.2 (ISOGG: I2a1. formerly I2a)
- I2a1b - I-M423 (formerly I2a2)
- I2a2a - I-M223 (formerly I2b1)
- I2a2a (L69.2) - I-L69.2
- I2a2a1 - I-M284 (ISOGG: I2a2a, formerly I2b1a)
- I2a1 - I-P37.2 (ISOGG: I2a1. formerly I2a)
See Tree for I1 in Project Documents for Ken Nordtvedt's (May 2012) tree
ISOGG I Tree http://www.isogg.org/tree/ISOGG_HapgrpI.html
How to Participate
To participate in this project, join or follow the project, then add your oldest known ancestor who belonged to this haplogroup. The profile must be set to public in order to add it.
Resources
- DIS-Norge, Informasjon om I2 (Norsk / Norwegian)
- Eupedia, Haplogroup I2 (Y-DNA)
- Wikipedia, Haplogroup I2 (Y-DNA)