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Major update reorganizes entire haplogroup I2 tree

Saturday, August 31, 2019

Friday, August 23, 2019

New tree specific to I-FGC56815 (part of I-L233 "Western")

Click here to download our first draft tree for I-FGC56815 (dated 2019-08-23)

The I-L233 haplogroup is sometimes nicknamed "Western" because it's found throughout Western Europe, but it's also found in Central and Eastern Europe (France, the Netherlands, Belgium, Denmark, Norway, Germany, Poland, Croatia, Albania, Moldova, Finland etc).

Probably I-L233 is most common in Great Britain, although much less than 1% of British men belong to I-L233. (And I-L233 is very rare in Ireland, it has only been found in families that arrived in Ireland within the last 1,000 years from Britain or from Continental Europe).

The common ancestor of I-L233 lived approximately 2000 years ago according to YFull's calculation. It had a very rapid expansion at the earliest stages, for example most I-L233 men belong to the major I-Y4252 branch which has at least 22 immediate child branches.

It's difficult to study the spread of I-L233 because British-ancestry men have done so much more DNA testing than men from other countries. Most of the named branches have only been found in Britain and most of the named branches contain only a few families.

But the I-FGC56815 branch is British and contains many families, and we have created a new tree specifically for I-FGC56815. Most of the families have ancestry from the southern half of England, or they are American and have unknown ancestry, probably from Great Britain.

Click here to find our previous I-L233 tree which included information on I-FGC56815
Click here for a brief description of the I-FGC56815 haplogroup

Thursday, August 22, 2019

Many updates: 2019-08-20 tree for I-Y4460

Click here to download our 2019-08-20 tree for I-Y4460

This tree shows many updates (indicated in red):

  • some of the new samples on the tree are people who did Big Y-500 in 2018 or earlier, but joined our I-P37 project recently
  • some of the new samples on the tree are people who didn't order Big Y-500, instead they ordered Big Y-700 in 2019
  • there are some new branches on the tree thanks to people who upgraded Big Y-500 to Big Y-700

Click here to find our previous tree for I-Y4460
Click here for a brief description of the I-Y4460 haplogroup