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Thread: Why would a British person get low Great Britain ?

  1. #11
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    I am a mix of "Colonial American", North German, and Southern Italian. Ancestry .com gave me a higher Great Britain score than the average native Great Britain person.

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  3. #12
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    Quote Originally Posted by firemonkey View Post
    In my case 15% Great Britain. I get 38% Irish. My known ancestry English 50% Scottish 31% Irish 19%
    Good question. I get 2% GB and 67% Europe West.
    YDNA: R1b-Z220 (A7066+) (1800's Stepney, London(Bethnal Green), UK George Wood b. 1782
    maternal-grandfather YDNA: ? Gurr, George 1843, Feversham, Kent, England.
    maternal-grandmother YDNA: ? Beech, John Richard b. 1780, Lewes, England
    maternal-ggrandfather YDNA R1b-U106 Thomas, Edward b 1854, Sittingbourne, Kent
    paternal-ggf YDNA: R1b-L48. Gould, John Somerset England 1800s.
    paternal-ggf YDNA: R1b-L48. Scott, William Hamilton mdka Ireland(?) < 1800s

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  5. #13
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    Quote Originally Posted by L1983 View Post
    I got 61% Europe West and <1% GB with Ancestry. Mum got roughly 30/40 split between Europe West and GB without looking.

    Edit: added our results

    Edit: We are also predominantly Southern English, with my dad having a grandmother from Cork.
    Which part(s) of southern England?

    Quote Originally Posted by ADW_1981 View Post
    Good question. I get 2% GB and 67% Europe West.
    Can you remind me which parts of England your people came from?

    Quote Originally Posted by JerryS. View Post
    I am a mix of "Colonial American", North German, and Southern Italian. Ancestry .com gave me a higher Great Britain score than the average native Great Britain person.
    Another example of Ancestry DNA assigning a huge amount of GB to a mixed individual. My friend who I suggested Ancestry to for an entry level DNA kit (and he still hasn't forgiven me for it!) ended up getting 88% Great Britain, 6% Ireland, and the rest trace regions. Although he is mostly British, he's about 25% Scottish, much of which is Gaelic/Highland, and the rest Aberdeenshire area. He's also 12.5% Swedish. He was really shocked (disappointed) to see no Scandinavian percentage. In the end, we concluded that Ancestry's GB category "ate" his Scandinavian and the Ireland percentage he would/should have received from his Scottish ancestry and averaged them into the Great Britain category. He was worried he wasn't actually Swedish, but in his family his Swedish ancestry is quite recent.. in the end he took 23andme which correctly identified him as part Scandinavian, in an acceptable percentage for his known ancestry. The fact that Ancestry assigned 0% Scandinavian to an individual who has a great-grandparent who was born in Scandinavia, while assigning my father 11% (whose only Scandinavian connection is a tiny amount of Orcadian ancestry) is impressively bad in my opinion.
    Last edited by sktibo; 09-06-2017 at 04:05 PM.
    Paper trail ancestry to the best of my knowledge:
    English 28.12%, German 18.75%, Scottish 17.96%, Irish (mostly lowland Scottish origin) 12.5%, French 8.2%, Eastern European 6.25%, Welsh 3.125%, Native American 1.95%, and Colonial American, 3.125%, which cannot be determined with complete certainty: there is Dutch (at least 1.36%) and some English. The rest could include Spanish, Norwegian, German, French, and Native American, but these percentages would be minuscule.

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  7. #14
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    Quote Originally Posted by sktibo View Post
    Which part(s) of southern England?



    Can you remind me which parts of England your people came from?


    Known ancestry maternal: Kent, Essex, South London, Sussex, Somerset, Lincolnshire

    Paternal: East London, South London, Hertfordshire, Cork, Staffordshire, Sussex

    Probably more but haven't looked for ages.

    Edit: Mums paternal side seemed to have been in South London from at least 1750. Haven't gone much further back. Bit of a shock as I thought they were Scottish at first!
    Last edited by L1983; 09-06-2017 at 04:12 PM.
    Known ancestry: English (mostly S/SE England) + Irish (Cork)

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  9. #15
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    Quote Originally Posted by L1983 View Post
    Known ancestry maternal: Kent, Essex, South London, Sussex, Somerset, Lincolnshire

    Paternal: East London, South London, Hertfordshire, Cork, Staffordshire, Sussex

    Probably more but haven't looked for ages.
    Thank you, so it is your mom's results that show the 36% GB then?
    Paper trail ancestry to the best of my knowledge:
    English 28.12%, German 18.75%, Scottish 17.96%, Irish (mostly lowland Scottish origin) 12.5%, French 8.2%, Eastern European 6.25%, Welsh 3.125%, Native American 1.95%, and Colonial American, 3.125%, which cannot be determined with complete certainty: there is Dutch (at least 1.36%) and some English. The rest could include Spanish, Norwegian, German, French, and Native American, but these percentages would be minuscule.

  10. #16
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    Quote Originally Posted by sktibo View Post
    Thank you, so it is your mom's results that show the 36% GB then?
    Yes sorry. Mine was 61% Europe West. Mum's is split between Europe West + GB (34%) and dad's has majority Irish (48%) according to Ancestry.
    Last edited by L1983; 09-06-2017 at 04:17 PM.
    Known ancestry: English (mostly S/SE England) + Irish (Cork)

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  12. #17
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    This happens because ADMIXTURE-based methods are not precise enough to tell many Northwest Europeans apart from each other.

    As seen in the table below, the academic GBR samples from 1000genomes (all 4 grandparents British, mostly from Cornwall and Kent), get basically anything between 0% and 100% Great Britain using the AncestryDNA platform. Median is just 36%. It's even worse for HGDP French who tend to get more GB than West European (supposed to represent French and German).
    http://www.nature.com/article-assets...s14238-s4.xlsx

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  14. #18
    3% British, 35% West Europe, 38% Scandinavian, 17% Ireland, 3% Greece, 2% Finland/NE Russia, 1% South Asian.

    Only 2 great-great grandparents were full "off-the-boat" Irish [3.75%]. No obvious sign - by surname or DNA relatives - of other Irish/Scottish ancestry. The rest of the ancestry resides in the same 10-30 mile region (furthest migrant, one person, 70 miles south) for the last 250-300 years before I really start losing ancestors or the last 200 years if I cut everyone at the Irish brick-wall.

    Supposedly area was widely populated by people from Denmark (73% "Germanic" overlap). The dialectical slang still has quite a bit of Danish[/Germanic]-equivalency. In fact, there's a (linguistically trained) professor who does a summary on the region commenting about this lingering "phenomena" and, irony is, she happens to be German.

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  16. #19
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    Quote Originally Posted by firemonkey View Post
    In my case 15% Great Britain. I get 38% Irish. My known ancestry English 50% Scottish 31% Irish 19%
    I'm from NI and I got 0% GB meanwhile getting 1% Pacific Island, I have similar feelings.

  17. #20
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    Quote Originally Posted by JerryS. View Post
    I am a mix of "Colonial American", North German, and Southern Italian. Ancestry .com gave me a higher Great Britain score than the average native Great Britain person.
    I find it interesting how the Americans seem to record higher GB % than Native born Brits.

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