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I1 Suomi Finland & N-CTS8565

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Y-DNA haplogroup I1 in Finland

Approximately a quarter of Finnish male population belongs to haplogroup I1 (I-M253). The largest I1 branch in the country is L258 which covers about 2/3 of all I1. The path is M253 > DF29 > CTS6364 > L22 > CTS6868 > Z74 > CTS2208 > CTS7676 >L287 > L258. Together with other I1 haplotypes it can be found mostly in the western part of the country and on the coastal areas. The L287 > L258 branch has thus been part of the Iron age culture especially in Satakunta and Pirkanmaa provinces. 

L258 has 8 known subclades, CTS2242, Z2045, BY2572, BY510, Y8598, BY3475 and two without a known SNP. There are also a couple of STR-based groups that are still lacking a known SNP but we are slowly able to connect them to subclades with Big Y testing. 

Other I1 (M253) haplotypes found in Finland are mostly various L22 subclades and some branches of Z58, for example A6174, Z382 and L1302. A6174 is probably the second largest old I1 haplo. The simplified Finnish I1 haplotree can be found in the Background section. Some of these branches separate early from I1 haplotree and they might have been a long time in Finland. Scandinavian influence begins in the coastal areas during the Bronze age (3500 - 2500 ybp). 

The origin of L258

The branch has its origin in Southern Scandinavia as do all I-L22 haplotypes. The arrival to present day Finland has obviously happened between CTS7676 and L287 phases, probably more than 2000 years ago. CTS2208 has been found in England, Germany, Poland, Sweden, Belgium and in Russia and the closest branch for L287 in Middle of Sweden. Subhaplos of CTS2208 has probably been involved in Germanic Migrations and Viking travels later.

CTS2208+ has usually DYS511=9 which is unique inside L22. Typical for CTS7676/L287/L258 is also DYS439=10. Other modal values are DYS464=12-14-15-15 and DYS413=21-24. Please, join the Project if you find these values familiar.

If you have any questions, feel free to send email to the administrator in English, Finnish or Swedish.