Haplogroup R1b is discussed in a Wikipedia article.
The cluster Leinster is aka DYS464x ccgg. Persons within this group are advised to join the R-Z255 Project.

According to John Laughlin of the R1b1c7 mailing list, the O'Clery Book of Genealogies has only two families listed as descended from Ailill son of Eoghan:

§725 Genelach .H. Forchellaigh [O'Farrelly] There is a family of this name, erenaghs of Drumlane, in Co. Cavan; Also found in the parish of Mullagh in the same county, but it's not certain this is the same family.
§726 Comarba Maedhocc
§727 O Ferghusa Rosa Inbir [O'Fergus] An erenagh family of Rossinver, Co. Leitrim
These notes are from: "The Irish Genealogist" Vol. 5, No. 6 Nov. 1979 "English Index to the O'Clery Genealogies" F.B. Payton.

To see if we could test that ancient genealogy as above, Farrelly kit 118977 has joined our project as a sponsored benchmark. His ancestor John FARRELLY was born 22 Mar 1840, Drumlane Parish a son of Michael FARRELLY.

SNP Tests

Persons herein are advised to test either the R1b - Z255 SNP Pack offered by FTDNA or the R1b-Z255 Panel offered by ySeq. These tests will confirm L159.2 and discover to which subclade of that haplogroup they belong.

Haplotype Table

A modal haplotype is the set of markers corresponding to the most frequently observed values for each marker. The markers highlighted are said to be off modal and patterns in these markers distinguish one branch or family from another.
The DYS464X CCGG L159.2+ modal haplotype in the table below was extracted from R-Z255 Project in Sep 2011.
FTDNA Configuration - DNA Results Comparison
ID D
Y
S
3
9
3
D
Y
S
3
9
0
D
Y
S
1
9
D
Y
S
3
9
1
D
Y
S
3
8
5
D
Y
S
4
2
6
D
Y
S
3
8
8
D
Y
S
4
3
9
D
Y
S
3
8
9
i
D
Y
S
3
9
2
D
Y
S
3
8
9
i
i
D
Y
S
4
5
8
D
Y
S
4
5
9
D
Y
S
4
5
5
D
Y
S
4
5
4
D
Y
S
4
4
7
D
Y
S
4
3
7
D
Y
S
4
4
8
D
Y
S
4
4
9
D
Y
S
4
6
4
D
Y
S
4
6
0
Y
-
G
A
T
A
-
H
4
Y
C
A
I
I
D
Y
S
4
5
6
D
Y
S
6
0
7
D
Y
S
5
7
6
D
Y
S
5
7
0
C
D
Y
D
Y
S
4
4
2
D
Y
S
4
3
8
D
Y
S
5
3
1
D
Y
S
5
7
8
D
Y
F
3
9
5
S
1
D
Y
S
5
9
0
D
Y
S
5
3
7
D
Y
S
6
4
1
D
Y
S
4
7
2
D
Y
F
4
0
6
S
1
D
Y
S
5
1
1
D
Y
S
4
2
5
D
Y
S
4
1
3
D
Y
S
5
5
7
D
Y
S
5
9
4
D
Y
S
4
3
6
D
Y
S
4
9
0
D
Y
S
5
3
4
D
Y
S
4
5
0
D
Y
S
4
4
4
D
Y
S
4
8
1
D
Y
S
5
2
0
D
Y
S
4
4
6
D
Y
S
6
1
7
D
Y
S
5
6
8
D
Y
S
4
8
7
D
Y
S
5
7
2
D
Y
S
6
4
0
D
Y
S
4
9
2
D
Y
S
5
6
5
D
Y
S
7
1
0
D
Y
S
4
8
5
D
Y
S
6
3
2
D
Y
S
4
9
5
D
Y
S
5
4
0
D
Y
S
7
1
4
D
Y
S
7
1
6
D
Y
S
7
1
7
D
Y
S
5
0
5
D
Y
S
5
5
6
D
Y
S
5
4
9
D
Y
S
5
8
9
D
Y
S
5
2
2
D
Y
S
4
9
4
D
Y
S
5
3
3
D
Y
S
6
3
6
D
Y
S
5
7
5
D
Y
S
6
3
8
D
Y
S
4
6
2
D
Y
S
4
5
2
D
Y
S
4
4
5
Y
-
G
A
T
A
-
A
1
0
D
Y
S
4
6
3
D
Y
S
4
4
1
Y
-
G
G
A
A
T
-
1
B
0
7
D
Y
S
5
2
5
D
Y
S
7
1
2
D
Y
S
5
9
3
D
Y
S
6
5
0
D
Y
S
5
3
2
D
Y
S
7
1
5
D
Y
S
5
0
4
D
Y
S
5
1
3
D
Y
S
5
6
1
D
Y
S
5
5
2
D
Y
S
7
2
6
D
Y
S
6
3
5
D
Y
S
5
8
7
D
Y
S
6
4
3
D
Y
S
4
9
7
D
Y
S
5
1
0
D
Y
S
4
3
4
D
Y
S
4
6
1
D
Y
S
4
3
5
L159.2_Leinster 13 24 14 11 11-14 12 12 12 14 13 30 17 9-10 11 11 25 15 18 30 15-15-17-17 11 11 19-23 16 15 18 18 39-40 11 12 11 9 15-16 8 10 10 8 10 10 12 23-23 17 10 12 12 15 8 12 22 20 14 12 11 13 11 11 12 12 36 15 9 16 12 25 26 19 12 11 13 12 12 9 13 12 10 11 11 30 12 13 23 13 10 11 20 15 19 13 24 17 13 15 24 12 23 18 10 14 17 9 12 11
118977_Farrelly 13 24 14 10 11-14 12 12 12 14 13 30 16 9-10 11 11 25 14 18 29 15-15-17-17 11 11 19-23 17 15 18 17 40-40 11 12
178594_Farrelly 13 24 14 11 11-14 12 12 12 14 13 30 17 9-10 11 11 24 15 18 29 15-15-17-17 11 11 19-23 17 15 19 17 39-40 11 12 11 9 15-16 8 10 10 8 10 10 12 23-23 17 10 12 12 16 8 12 22 20 14 12 11 13 11 11 12 12
89389_Ferguson 13 24 14 11 11-14 12 12 12 14 13 30 17 9-10 11 11 25 15 18 30 15-15-17-17 11 11 19-23 15 15 18 18 40-40 11 12 11 9 15-16 8 10 10 8 10 10 12 23-23 19 10 12 12 15 8 12 22 20 14 12 11 13 11 11 12 12
8YRRF_Quigley 13 24 14 11 11-14 12 12 12 14 13 30 17 9-10 11 11 25 15 18 30 15-15-17-17 11 11 19-23 16 15 18 18 40-40 11 12 11 9 15-15 8 10 10 8 10 10 12 23-23 19 10 12 12 15 8 12 22 20 14 12 11 13 11 11 12 12 12 11 12 12 12 9 13 12 10 11 11 30 12 13 13 12 23 10 9 12
Distance from reference: Zero One Two Three+

Genetic Distance

Genetic distance is a measure of the differences between two haplotypes. In its simplest form one simply counts the number of markers that differ. The model used is known as the Hybrid Mutation Model and conforms to that used by Family Tree DNA.
Genetic Distance
ID L
1
5
9
.
2

I
r
i
s
h

S
e
a
1
1
8
9
7
7

F
a
r
r
e
l
l
y
1
7
8
5
9
4

F
a
r
r
e
l
l
y
8
9
3
8
9

F
e
r
g
u
s
o
n
8
Y
R
R
F

Q
u
i
g
l
e
y
L159.2_Irish_Sea 111 7 6 4 5
118977_Farrelly 7 37 6 7 6
178594_Farrelly 6 6 67 10 10
89389_Ferguson 4 7 10 67 2
8YRRF_Quigley 5 6 10 2 87
Related Probably Related Possibly Related
FTDNA's Interpreting Genetic Distance for 37 Markers
FTDNA's Interpreting Genetic Distance for 67 Markers
FTDNA's Interpreting Genetic Distance for 111 Markers
- Hybrid mutation model is used
- Values on the diagonal indicate number of markers tested

Time to Most Recent Common Ancestor

The Time To Most Recent Ancestor (TMRCA) is a measure of relatedness and well defined in the case of a family tree wherein one simply counts the number of generations back to the most recent common ancestor shared with someone else in the tree. From differences in haplotypes between two men it is possible to make a rough estimate of the probability that the TMRCA falls between two numbers. The numbers reported in the table below are such that the TMRCA is expected to fall within the range shown with a probability of 90%.
Time to Most Recent Common Ancestor (Generations)
ID L
1
5
9
.
2

I
r
i
s
h

S
e
a
1
1
8
9
7
7

F
a
r
r
e
l
l
y
1
7
8
5
9
4

F
a
r
r
e
l
l
y
8
9
3
8
9

F
e
r
g
u
s
o
n
8
Y
R
R
F

Q
u
i
g
l
e
y
L159.2_Irish_Sea 111 17-55 10-36 4-23 5-23
118977_Farrelly 17-55 37 13-49 13-49 13-49
178594_Farrelly 10-36 13-49 67 14-45 17-49
89389_Ferguson 4-23 13-49 14-45 67 2-19
8YRRF_Quigley 5-23 13-49 17-49 2-19 87
Related Probably Related Possibly Related
- Infinite allele mutation model is used
- Average mutation rate varies: 0.0024 to 0.0036
- Mutation rates from Heinilia, 2012
- Values on the diagonal indicate number of markers tested
- The TMRCA is expected to be in the range shown (5% to 95%)
- Related means in a genealogical time frame as defined by ISOGG


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