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Project Groupings

Corrigan Y-DNA Project members are grouped by their Y DNA Haplogroup.
R1b is the largest Y Haplogroup in the project, (and the major Y Haplogroup in Ireland ), we also have I Haplogroup present.
Members of different Y Haplogroups will have no likelihood of sharing a common ancestor in the last several thousand years (Non Paternal Events are of course a reality and may be a reason why your paper trail tells a different story.)
Haplogroups are subgrouped where possible, and these will be updated as new results show clear relationships and/or groups. If members are in an Unmatched Group, they are NOT considered to be related, they just share the same subgrouping until a match is found.


The members of the CorriganY-DNA Project  fall mainly into two large subgroups. Within the general R1b haplogroup (which includes most of the members), the main division to be seen in the project are between the Airghialla cluster (R1b L69.5) and the North West Irish Type cluster (R1b M222).
Both of these groups are part of the large R1b L21 group, which  has many Irish subgroups, including the South Irish and Leinster types.



The Airghialla Cluster;

Associated with the  Airghialla (Oriel) Mag Uidhir (Maguires) of whom the Corrigans are said to be of the same stock.  The DNA shows good matches with this group.                     

Distincitve marker results are   DYS 617>=13 406S1>=11 640=12 390-25 437=16 448=18.  This cluster is part of the R1b L21 group,  in a subgroup named "L21, 11-13" after the 406S1 and 617 marker results.  As these 2 markers are in the 38-67 panel we need more of the men in these groups to test to 67 to see if they do have the 11-13 results.   We also would love to see men in this cluster SNP tested to confirm the R1b L69 SNP .


"R1b Airghialla Group 01", with two members having a very close match at 36/37 markers. Kits N10033 and 78958. This indicates these two men are very closely related I understand these two men are both descended from Michael Corrigan b 1791 in Ireland. (N10033 is R1b L69+)

"R1b Airghialla Group 02",  3 men 109682,  211274  and  239026.

"R1b  possible Airghialla Group 03",
This group consist of 4 men descended from three brothers, who can trace back to Ireland.
Kits 98149 and N54927 match exactly at 37 markers and are descended from 1 brother.
They differ from Kits 104447 and 99650 on 2 markers, DYS 449 and DYS CDYa.
Kit 104447 and 99650 are descended from the 2 other brothers and only have 1 mismatch between them at DYS 389-2.

"R1b possible Airghialla Group 04", 3 men 89823, N45032 and N99886 who match at 12 markers. N45032 and N99886 would need to test for more markers to see if this match  continues


"R1b Airghialla Group 05", 2 men who match very well at 37 markers 86212 and 197737.  (197737 is R1b L69+)


"R1b Airghialla Group 06", 2 men who match 34/37 with each other, 266645 and 43739.



North West Irish Type;

Associated with the North West Ireland and lowland Scotland areas.  Defined by the SNP M222.  A subgroup of R1b L21.  (See "Deep Ancestry" notes below)


"R1b NW Irish Type - 01" , with seven members, two of whom have a very good match of 36/37 markers. I understand that Kits 34966 and N7450 both have links to the Parish of Lisacul in Co Roscommon, Ireland. The third and fouth families in this group are from Achill Island, Co Mayo, Ireland. Kit N52274 and A00002. Our fitfh member , Kit 186065 is from Owenduff, Co Mayo. (N52274 is R1b M222+).  Kit 265412, has not provided a place, but matches Kit N7450 exactly at 37 markers.  Kit 282797 matches well with this group.




"R1b Group 01", with two men.  Kit 102125, who has not provided any family information, has only 12 markers but is a perfect match with Kit A00004 at thei level..  This family trace back to Patrick Corrigan whos son was born in Dublin in 1851.

These two men could be part of the R1b L21 subgroup,  South Irish Type,  as they have some of the distinctive markers for this cluster.




"R1b Group 02", with two men.  Kit 233429, who traces back to Ireland c 1837,  and Kit 251817  who also traces back to Ireland c 1790.   They have a great match with 36/37 markers.  Lets hope they can find a connection.



Our other men are in Unmatched Groups awaiting a match.


"Unmatched R1b NW Irish/Type I", has 7 men, 179740, 92523, 171393, A00003, A00001, 58583 and 265401
This group comprises men who match a R1b "cluster" associated with NW Ireland and Lowland Scotland.
More information on this can be found att hese sites;



"Unmatched R1b South Irish/Type II", this group comprises men who match a R1b "cluster" associated with Southern Ireland  and has one member, 121498.
More information can be seen at;



"Unmatches R1b Leinster Type", one member 115297,  this group comprise men who match a R1b "cluster" associated with several historical Irish Clan names such as O’Byrne (Lagin Chieftans), Beatty, McLaughlin (a Kings of Meath sept)- a fairly small cluster or modal
Other than 15c 15c 17g 17g at 464x, other distinctive markers are;
14 13 30 at 389i 392 389ii,
18 at 448,
11 at 442
CDY a and b have high values.
More information can be found at;



"Unmatched R1b", Kits  71421 and SMGF01 are still waiting for a close match.



"Unmatched Haplogroup I1',  Kits 86099 and  95341, are waiting for close matches.



Deep Ancestry

As for the group’s deep ancestry, most of our member’s are in Haplogroup R1b and one member is Haplogroup I1

R1b is the most common Haplogroup in Western Europe, and especially common in parts of Ireland, reaching up to 98%, so it will not be surprising if it is a common Haplogroup in our project, though we can also expect to see Halogroups I, G, J and E3b.


HAPLOGROUP R1b; (From Wikipedia)

The point of origin of R1b is thought to lie in Eurasia but much published discussion concerning R1b has surrounded the direction and timing of R1b entry into Europe. Since 2010 two major scientific papers have been published discussing this subject one of them (which has been criticized published in January stated that ‘’perhaps R1b entered Europe from Asia more recently, perhaps in the Neolithic’’ however another paper published in May contradicted this and stated that perhaps "R1b, or at least the majority of it in Europe, dispersed from Iberia after the Last Glacial Maximum, after having come from western Asia much earlier and states evidence of two separate R1b dispersals in the Mesolithic period, one from Anatolia, and one from Iberia".

In 2008 T. Karafet et al. estimated the age of R1, the parent of R1b, as 18,500 years before present.


Subgroup R1b1b2 is defined by the presence of SNP marker M269.

In articles published around 2000 it was proposed that this clade came into existence in Europe before the last Ice Age, but more recently this scenario is no longer receiving much mainstream attention. A much newer estimate for R1b1b2 arising is around 5,000 to 8,000 years ago. It also appears increasingly to be the case that Western European R1b is dominated by R-P310, also known as R-L11. It is this Western European branch which is in turn dominated by U106 and P312, and the typical most common STR Y DNA signature for Western Europe, the so-called Atlantic Modal Haplotype, which is also sometimes referred to as "Haplotype 15". Haplotype 15 is contrasted with "Haplotype 35", which has long been noted as a distinct type of R1b1b2, more common towards the southeast of Europe.
(FTDNA Members whose 12-marker Haplotype matches one of the four most common 12-marker R1b Haplotypes will find they have a WAMH logo on their member page.)


Subgroup R1b (P312) appears to account for at least half of European R1b1b2.


Subgroup R1b (L21) within R1b P312.  Early results suggest that it is common in Britain, Ireland and possibly northern France. It is also apparently common in Germany and Scandinavia, but is rare in Iberian or Italian male lines.

Subgroup R1b (M222) within R1b L21.  It is particularly associated with male lines which are Irish or Scottish. In this case, the relatively high frequency of this specific subclade among the population of certain counties in northwestern Ireland may be due to positive social selection, as it is suggested to have been the Y-chromosome haplogroup of the Uí Néill dynastic kindred of ancient Ireland. However it is not restricted to the Uí Néill as it is also associated with the closely related Connachta dynasties, called the Uí Briúin and Uí Fiachrach. In addition it is also found in southern Scotland and so is thus commonly referred to as the Northwest Irish/Lowland Scots Variety.
(FTDNA Members whose 12 marker Haplotype matches the Niall Modal Haplotype will have a green "Niall of the Nine Hostages" logo on their personal page.)

Subgroup R1b (L226) within R1b L21.  Commonly referred to as Irish Type III, it is concentrated in central western Ireland and associated with the Dál gCais kindred.



Y-DNA haplogroup I is a European haplogroup, representing nearly one-fifth of the population. It is almost non-existent outside of Europe, suggesting that it arose in Europe. Estimates of the age of haplogroup I suggest that it arose prior to the last Glacial Maximum.
The two main subgroups of haplogroup I, I1 and I2, likely divided approximately 28,000 years ago:
-I1-M253 et al has highest frequency in Scandinavia, Iceland, and northwest Europe. In Britain, haplogroup I1-M253 et al is often used as a marker for "invaders," Viking or Anglo-Saxon.
-I1a-M227 subclade is concentrated in eastern Europe and the Balkans and appears to have arisen in the last one thousand to five thousand years. It has been reported in Germany, Czech Republic, Poland, Estonia, Ukraine, Switzerland, Slovenia, Bosnia, Macedonia, Croatia, and Lebanon.
-I2-M438 et al includes I2* which shows some membership from Armenia, Georgia and Turkey;
-I2a-P37.2, which is the most common form in the Balkans and Sardinia; I2a1-M26 is especially prevalent in Sardinia.
-I2b-M436 et al reaches its highest frequency along the northwest coast of continental Europe.
-I2b1-M223 et al occurs in Britain and northwest continental Europe.
-I2b1a-M284 occurs almost exclusively in Britain, so it apparently originated there and has probably been present for thousands of years



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