I have a group of 35 on chromosome 6 starting around 87,000,00 and ending around 99,000,000 in terms of where they match my brother and me. I used to check each one against everyone else in the group, but quit and now just check against several in the group to triangulate.The people who match are from the US, UK, and Australia (so initially I expected this to be on my mother's side), and some have a preponderance of colonial ancestry. Once I was able to confirm that this is a segment from my paternal grandmother (testing one of her nieces, who is half Norwegian and half Swedish), I formed the hypothesis that this is an old bit of Finnish DNA. Why? My grandmother's parents were both Norwegian, but one has proved to have substantial Forest Finn ancestry, causing us to match a lot of Finns. Finns went to Delaware a couple hundred years ago, so I think that probably explains the colonial US aspect. The other possibility is that my brother's and my having two Norwegian grandmothers, and our relative being half Norwegian and half Swedish, could cause us to match in miscellaneous ways with a lot of people (IBS), but as the matches triangulate well with others on their part of the segment (these people match us around 7-8 cM apiece), I'm inclined to think it is a scrap of IBD old Finnish. On Sun, Dec 13, 2015 at 5:56 AM, Andreas West via < genealogy-dna@rootsweb.com> wrote: > Hi everyone, > > I hope we can find some consensus here and maybe some of you know even what > number (of matches at a certain loci) is used by AncestryDNA to identify > pileups. > > We're obviously not talking about 1000 here as that would give us 499500 > 1-to-1 comparisons to run between the 1000 matches. That's the main reason > why > DTC DNA testing companies (and also GEDmatch) are interested to identify > pileups to limit useless calculations (which in the end will still not > find a > single triangulated group (maybe) or it's too far back anyway, see the > Timber > algorithm used by AncestrDNA to cut matches. > > a) I have 97 matches (at the same loci) for one of my kits (at the "X" > chromosome interestingly, it's a female person), which means 4656 > combinations. Is that number already a pileup? > > How about: > > b) 52 matches = 1326 combinations > > c) 36 matches = 630 combinations > > d) 23 matches = 253 combinations > > e) 18 matches = 153 combinations > > Where is the line to draw? At a, b, c, d, e or where? > > > What is the largest number of matches that you have in your triangulated > groups? > > We obviously don't want to miss out a large TG as it also means a lot of > people can "crowdsource" together and identify the CA much quicker than a > group of 3 can (usually means also more family trees to compare with). > > Thanks for your answers! > > Andreas (WEST) born BASSO > > My ancestors: [http://www.wikitree.com/genealogy/Basso-Family- > Tree-23](http://www.wikitree.com/genealogy/Basso-Family-Tree-23) > > ------------------------------- > To unsubscribe from the list, please send an email to > GENEALOGY-DNA-request@rootsweb.com with the word 'unsubscribe' without > the quotes in the subject and the body of the message > -- Karla Huebner calypsospots AT gmail.com

Thanks Karla, that information is very useful for me (and surprising). I wouldn't have thought that one has a TG that large. Good that you stopped comparing everyone with everyone, with 35 matches these are 595 One-to-One on atDNA and the same number on X-DNA. Hope you will one day identify the common ancestor or at least get it down to a location Thanks again, Andreas > On 13 Dec 2015, at 22:16, Karla Huebner <calypsospots@gmail.com> wrote: > > I have a group of 35 on chromosome 6 starting around 87,000,00 and ending around 99,000,000 in terms of where they match my brother and me. I used to check each one against everyone else in the group, but quit and now just check against several in the group to triangulate.The people who match are from the US, UK, and Australia (so initially I expected this to be on my mother's side), and some have a preponderance of colonial ancestry. > > Once I was able to confirm that this is a segment from my paternal grandmother (testing one of her nieces, who is half Norwegian and half Swedish), I formed the hypothesis that this is an old bit of Finnish DNA. Why? My grandmother's parents were both Norwegian, but one has proved to have substantial Forest Finn ancestry, causing us to match a lot of Finns. Finns went to Delaware a couple hundred years ago, so I think that probably explains the colonial US aspect. > > The other possibility is that my brother's and my having two Norwegian grandmothers, and our relative being half Norwegian and half Swedish, could cause us to match in miscellaneous ways with a lot of people (IBS), but as the matches triangulate well with others on their part of the segment (these people match us around 7-8 cM apiece), I'm inclined to think it is a scrap of IBD old Finnish. > >> On Sun, Dec 13, 2015 at 5:56 AM, Andreas West via <genealogy-dna@rootsweb.com> wrote: >> Hi everyone, >> >> I hope we can find some consensus here and maybe some of you know even what >> number (of matches at a certain loci) is used by AncestryDNA to identify >> pileups. >> >> We're obviously not talking about 1000 here as that would give us 499500 >> 1-to-1 comparisons to run between the 1000 matches. That's the main reason why >> DTC DNA testing companies (and also GEDmatch) are interested to identify >> pileups to limit useless calculations (which in the end will still not find a >> single triangulated group (maybe) or it's too far back anyway, see the Timber >> algorithm used by AncestrDNA to cut matches. >> >> a) I have 97 matches (at the same loci) for one of my kits (at the "X" >> chromosome interestingly, it's a female person), which means 4656 >> combinations. Is that number already a pileup? >> >> How about: >> >> b) 52 matches = 1326 combinations >> >> c) 36 matches = 630 combinations >> >> d) 23 matches = 253 combinations >> >> e) 18 matches = 153 combinations >> >> Where is the line to draw? At a, b, c, d, e or where? >> >> >> What is the largest number of matches that you have in your triangulated >> groups? >> >> We obviously don't want to miss out a large TG as it also means a lot of >> people can "crowdsource" together and identify the CA much quicker than a >> group of 3 can (usually means also more family trees to compare with). >> >> Thanks for your answers! >> >> Andreas (WEST) born BASSO >> >> My ancestors: [http://www.wikitree.com/genealogy/Basso-Family- >> Tree-23](http://www.wikitree.com/genealogy/Basso-Family-Tree-23) >> >> ------------------------------- >> To unsubscribe from the list, please send an email to GENEALOGY-DNA-request@rootsweb.com with the word 'unsubscribe' without the quotes in the subject and the body of the message > > > > -- > Karla Huebner > calypsospots AT gmail.com