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Taylor Haplogroup I

This page is about the Y chromosome haplogroup I. Its purpose is to explain the genealogical and anthropological meanings of the determination.

If you are coming to this page directly, you may want to read first about haplogroups in general; you will probably need the background.



As of this writing, Taylor Family Genes has 79 members in this haplogroup, about 15% of the total membership.

About this Haplogroup

Haplogroup I is believed to have originated 25 to 30 kya during the Last Glacial Maximum, in Europe or Southwest Asia. Its defining SNP is M170.

Pertinent to the Taylor surname is that haplogroup I was carried by by Norse settlers ("Vikings") in Great Britain beginning about 800 AD and may have been carried Germanic immigrants ("Anglo-Saxons") beginning about 400 AD.

It is most frequent today in the Balkans, northern Germany, Scandinavia and Iceland.

I1 (I-M253)

I1 (I-M253) reaches its peak frequency of 35% in Denmark, southern Norway and southwestern Sweden.

Subclades include:

I2 (I-M438)

I2 (I-M438) was known as I1b until 2008

Subclades include:

Members of this haplogroup may want to consider joining the DNA project for it. See http://www.familytreedna.com/public/HaplogroupIYDNA/ or http://www.familytreedna.com/public/yDNA_I1/ or the most appropriate of those listed at http://www.isogg.org/wiki/Y-DNA_haplogroup_projects.


From Wikipedia:

"Y-DNA Haplogroup I (the letter I, not the number 1) represents nearly one-fifth of the population of Europe. It can be found in the majority of present-day European populations; the greatest density to be found in Bosnia and Herzegovina, Croatia, Norway, Sweden, Sardinia, Denmark, Germany, and Serbia. The haplogroup is almost non-existent outside of Europe, strongly suggesting that it arose in Europe"

Also see another Wikipedia article. "It is strongly associated with Scandinavia, achieving a prevalence greater than 50% in Denmark, northern Germany, and parts of Sweden & Norway; 40-50% in eastern England & Scotland; and greater than 15% throughout the rest of England & Scotland plus western Ireland." 

We may hypothesize that haplogroup I in Taylor Family Genes members is suggestive of Viking ancestry. Beginning in the 9th century AD, Danish Vikings established large permanent settlements and wielded considerable influence in the British Isles.

Y-DNA Values

We do not publish individual members' Y-DNA results. They may be viewed on the Family Tree DNA public site,  http://www.familytreedna.com/public/taylorfamilygenes/default.aspx?section=yresults


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Revised: 08 Jul 2013