Northern Ireland Y-DNA

FamilyTreeDNA holds for Northern Ireland: 2,970 kits with a Y-DNA result. On the paternal line the most common are R-Z39589* — 5%, I-L137 — 5% and R-S588 — 4%. YFull has 240 samples for Y from the same area, and its mix of major branches is noticeably different. The largest gap is I-CTS595: 1% on FTDNA against 6% on YFull.

2,970

kits

1,787 distinct finest branches

36%

on leaves

share of kits that reached the finest branch of the tree. The rest stopped at a broad branch: their test was not detailed enough.

58%

Big Y

rough share of kits with a Big Y test, a full read of the Y chromosome. It is estimated from the branches where the region's kits sit, so it is an estimate, not a count.

Each colour is one of the eight most common macro-haplogroups worldwide (the first letter of the haplogroup, such as R or J). Everything else is grey.RIJENGQTother

Level 1

Macro-haplogroups #

The first letter of the haplogroup, the broadest division of the Y tree. Percentages of all the region's kits.

2,341 · 78.8%

495 · 16.7%

61 · 2.1%

40 · 1.3%

19 · 0.6%

7 · 0.2%

3 · 0.1%

1 · 0.0%

Level 2

Major branches (clades) #

The major branches the region's kits belong to. Each kit is counted once, in the finest major branch its test reached. Asterisk: kits left on the branch itself because they fall into none of its major sub-branches. A branch counts as major when it holds at least 0.4% of all kits worldwide.

R-Z39589*

148 · 5.0% 4,500 years

I-L137

139 · 4.7% 5,800 years

R-S588

129 · 4.3% 1,700 years

R-L151* R1b-L151

113 · 3.8% 5,100 years

R-S673

113 · 3.8% 1,700 years

R-DF21*

96 · 3.2% 4,400 years

R-S744

91 · 3.1% 1,600 years

R-M222* R1b-M222

89 · 3.0% 2,100 years

R-L21* R1b-L21

77 · 2.6% 4,700 years

R-Z251

77 · 2.6% 4,400 years

R-S5668

61 · 2.1% 3,800 years

R-DF25

54 · 1.8% 4,100 years

R-Z253*

53 · 1.8% 4,500 years

R-ZZ87*

52 · 1.8% 1,800 years

R-L1065*

45 · 1.5% 1,800 years

R-Z255

43 · 1.4% 2,100 years

R-S1690

43 · 1.4% 3,600 years

R-Z304*

39 · 1.3% 4,200 years

R-L513*

36 · 1.2% 4,000 years

R-L448*

36 · 1.2% 2,900 years

Level 3

Key branches tree #

Tree of the main branches. Each branch counts every kit in it and in its sub-branches; sub-branches are indented. Branches of at least 1% of the sample are shown; pass-through branches with no side branches are skipped. Age is how many years ago the branch's common ancestor lived (TMRCA), from FTDNA Discover.

R R-M207

2,341 · 78.8% 28k years

└ R1b-L51 R-L51

2,184 · 73.5% 6,100 years

└ P312 R-P312

1,722 · 58.0% 4,900 years

└ L21 R-L21

1,450 · 48.8% 4,700 years

└ DF13 R-DF13

1,373 · 46.2% 4,600 years

└ M222 R-M222

460 · 15.5% 2,100 years

└ DF27 R-DF27

159 · 5.4% 4,700 years

└ U152 R-U152

78 · 2.6% 4,700 years

└ U106 R-U106

338 · 11.4% 5,000 years

└ L48 R-L48

137 · 4.6% 4,500 years

└ R1a-M198 R-M198

110 · 3.7% 8,500 years

└ Z282 R-Z282

92 · 3.1% 4,800 years

└ Z284 R-Z284

85 · 2.9% 4,200 years

I I-L758

495 · 16.7% 35k years

└ I1 I-M253

229 · 7.7% 20k years

└ DF29 I-DF29

193 · 6.5% 4,500 years

└ L22 I-L22

92 · 3.1% 3,900 years

└ Z58 I-Z58

79 · 2.7% 4,500 years

└ I2b I-M223

217 · 7.3% 17k years

└ M284 I-M284

153 · 5.2% 9,800 years

J J-M304

61 · 2.1% 30k years

└ J2 J-M172

35 · 1.2% 28k years branch tree ↗

E E-M96

40 · 1.3% 52k years

└ E1b1b-M35 E-M35

37 · 1.2% 25k years

YFull

The same country on YFull #

The same country at the second company, YFull. Its samples are placed on the FTDNA tree by shared mutations, so the branches are comparable. FTDNA share on the left, YFull on the right, then the difference in percentage points. Republics and other sub-regions are taken out of the country, as at FTDNA. Starred branches are nearly empty at YFull: every test there is whole-genome and reaches the fine branches. Only YFull customers (YF number) are counted, no ancient DNA. YFull data of 2026-09-29.

2,970

FTDNA

kits

240

YFull

samples

Macro-haplogroups

FTDNAYFull

FTDNA · YFull · Δ

78.8% · 59.2%−19.7

16.7% · 35.8%+19.2

2.1% · 2.5%+0.4

1.3% · 1.3%−0.1

0.6% · 0.8%+0.2

0.0% · 0.4%+0.4

0.2% · 0.0%−0.2

0.1% · 0.0%−0.1

0.0% · 0.0%0

Major branches (clades)

FTDNAYFull

FTDNA · YFull · Δ

I-L137

4.7% · 9.2%+4.5

R-L48* R1b-L48

1.0% · 6.7%+5.7

I-CTS595

0.7% · 6.3%+5.5

R-Z39589*

5.0% · 5.0%0

R-S588

4.3% · 3.3%−1

I-S7660

0.5% · 4.2%+3.6

R-L151* R1b-L151

3.8% · 1.3%−2.6

R-S673

3.8% · 3.8%−0.1

R-DF21*

3.2% · 3.8%+0.5

R-S5668

2.1% · 3.8%+1.7

R-L448*

1.2% · 3.8%+2.5

I-FGC15071*

0.3% · 3.3%+3

Distinctive branches #

Branches found here far more often than worldwide: their share is more than 3× the world share. The multiplier is in brackets. Branches of at least 10 kits are included.

I-L137: 139 kits · 4.7% (×10.8) 5,800 years
R-S588: 129 kits · 4.3% (×10.6) 1,700 years
R-ZZ87: 303 kits · 10.2% (×8.9) 1,800 years
R-S673: 113 kits · 3.8% (×8.4) 1,700 years
R-M222 R1b-M222: 460 kits · 15.5% (×6.0) 2,100 years
R-Z39589: 882 kits · 29.7% (×5.1) 4,500 years
R-DF13 R1b-DF13: 1,373 kits · 46.2% (×3.8) 4,600 years
R-L1065: 136 kits · 4.6% (×5.0) 1,800 years

Most similar countries #

Countries whose mix of major branches looks most like this one. The number is similarity: 100% is the same mix, lower means less in common. Computed only for countries with 100+ kits.