Haplogroup J1

What is Maternal Haplogroup J1?

Haplogroup J1 is a genealogical group of lineages defined by unique genetic markers present in your mitochondrial DNA, which is transmitted from your mother. Your maternal haplogroup paints a picture of your ancient origins and the migrations of your ancestors. Although your maternal haplogroup reflects just one of your many ancestral lineages, it carries information about that lineage over tens of thousands of years.

Haplogroup J1 is descended from haplogroup J. Among 23andMe research participants, haplogroup J1 is commonly found among populations in the United Kingdom and Ireland.

It's important to note that your haplogroup doesn't define your current ethnic identity; rather, it provides an insight into your deep ancestry on the maternal side.

Maternal Haplogroup Origins J

Top Surnames with Haplogroup J1

For surnames with sufficient representation in the data, these percentages represent the frequency with which each surname is found in individuals exhibiting this genetic marker.

Last Name	Frequency
smith	1.30%
johnson	0.80%
miller	0.70%
brown	0.60%
jones	0.60%
williams	0.60%
davis	0.50%
anderson	0.40%
martin	0.40%
wilson	0.40%
taylor	0.40%
moore	0.40%
thompson	0.30%
white	0.30%
allen	0.30%
thomas	0.30%
nelson	0.30%
clark	0.30%
garcia	0.30%
king	0.30%

Haplogroup J1 is linked to the Vikings

By 4,000 years ago an offshoot of J had made it all the way to the western edge of Europe, becoming entrenched among the Celtic-speakers of the British Isles. But even that wasn't the end of the journey. Beginning in the 8th century AD, Viking raiders who regularly pillaged coastal Britain and Ireland often sailed back home with Celtic women aboard. Some of those women carried this branch, so that today there are Norwegians and even Icelanders with the far-flung J haplogroup.

Viking Longship at Sunset