An individual with Sarmatian-related ancestry in Roman Britain

[pegasus]

He isnt Sarmatian and not even sure if he has any kind of Sarmatian-like admix. It is just a sample from the Caucasus probably similar to Georgians or some group shifted north of Armenians

When I saw their qpAdm models it became very apparent as well , such a low tail model with Samartian but had a much stronger tail model with just ARM LBA alone was a big red flag , he is 100% not a Sarmatian or admixed with one for that matter.

[Aramu]

There was a Sarmatian_Caucasus sample. It would be interesting to see how he relates to that sample.

[ph2ter]

I didn't realize until now that this work in some way flirts with the theory that King Arthur was actually the Roman governor of Liburnia after his career in Britain and that before that he participated in the expedition against Armenia.

These are the inscriptions found in Croatia:

[BowFX]

I didn't realize until now that this work in some way flirts with the theory that King Arthur was actually the Roman governor of Liburnia after his career in Britain and that before that he participated in the expedition against Armenia.

These are the inscriptions found in Croatia:

Very interesting if true, thanks for sharing. But I do not understand what this paper exactly has to with that. Would you mind explaining a bit further?

[ph2ter]

I didn't realize until now that this work in some way flirts with the theory that King Arthur was actually the Roman governor of Liburnia after his career in Britain and that before that he participated in the expedition against Armenia.

These are the inscriptions found in Croatia:

Very interesting if true, thanks for sharing. But I do not understand what this paper exactly has to with that. Would you mind explaining a bit further?

This Caucasian/Sarmatian person found in Britain could be explained by Artorius campaign in Armenia with the British legions under his command. Maybe?

[TanTin]

https://www.ebi.ac.uk/ena/browser/view/PRJEB67353

Updated 3 days ago for files.

Some of the fastq files are available now.

[TanTin]

Can someone convert from fastq to plink ?

[jamtastic]

If anyone missed it:

Musaeum Scythia: An individual with or without Sarmatian-related ancestry in Roman Britain?

[JonikW]

If anyone missed it:

Musaeum Scythia: An individual with or without Sarmatian-related ancestry in Roman Britain?

... And another take on this today from Bernard Sécher's genetic genealogy blog.

[TanTin]

Was anyone able to convert this "sarmatian" individual from fastq to plink ? It would be interesting to test how much "sarmatian" he is.

[TanTin]

Here is my plink converted file  for the Sarmatian. It's not perfect, I used only one of the fastq files, the first one. However it has more than 700k snips. (785k snips)

https://ufile.io/5ikcsuth

In case if you get such errors:

Error: 184 variants with 3+ alleles present.
* If you believe this is due to strand inconsistency, try --flip with
  temp/Sarmat_BK-merge.missnp.

There is an easy way how to fix it: ( alternative of using --flip )
system("plink  --memory 12000 --threads 2 --bfile bed_file_name   --exclude  temp/Sarmat_BK-merge.missnp  --make-bed  --out temp/Sarmat_BK_clean ")

The main idea:   --exclude  Sarmat_BK-merge.missnp   will exclude (ignore) all snips with  3+ alleles present .
184 variants  is a very small portion of near 800k so it will not affect us much.

[TanTin]

Here are the first 10 individuals with the shortest distance to the new "Sarmatian" individual  "C10271" in Roman Britain:

[1] "C10271"
[1] "C10271"                "HGDP01382.SDG"        "HGDP01403.SDG"        "S_North_Ossetian-2.DG"
[5] "DA243_noUDG.SG"        "HGDP01399.SDG"        "HGDP01383.SDG"        "S_Georgian-2.DG"     
[9] "S_North_Ossetian-1.DG" "HGDP01385.SDG"   


102          HGDP01382.SDG              Adygei.SDG
103          HGDP01383.SDG              Adygei.SDG
10410        HGDP01385.SDG              Adygei.SDG
109          HGDP01399.SDG              Adygei.SDG
113          HGDP01403.SDG              Adygei.SDG
1513        S_Georgian-2.DG            Georgian.DG
3647        DA243_noUDG.SG          Russia_Alan.SG
3687  S_North_Ossetian-1.DG Russia_NorthOssetian.DG
3688  S_North_Ossetian-2.DG Russia_NorthOssetian.DG

There is one Alan here,   DA243_noUDG  Russia_Alan.SG.

Therefore we see strong connection to Caucasus, however it seems to be stronger to  Adygei , Georgian  and Ossetians, than Sarmatians.

Increasing the number to 20,  let see the first 20 individual located near the Roman Sarmatian:

105                  C10271                    <NA>
100          S_Adygei-2.DG              Adygei.DG
102          HGDP01382.SDG              Adygei.SDG
103          HGDP01383.SDG              Adygei.SDG
10410        HGDP01385.SDG              Adygei.SDG
10510        HGDP01386.SDG              Adygei.SDG
106          HGDP01387.SDG              Adygei.SDG
108          HGDP01398.SDG              Adygei.SDG
109          HGDP01399.SDG              Adygei.SDG
110          HGDP01400.SDG              Adygei.SDG
111          HGDP01401.SDG              Adygei.SDG
113          HGDP01403.SDG              Adygei.SDG
114          HGDP01404.SDG              Adygei.SDG
1513        S_Georgian-2.DG            Georgian.DG
3637      S_Abkhasian-2.DG    Russia_Abkhasian.DG
3647        DA243_noUDG.SG          Russia_Alan.SG
3687  S_North_Ossetian-1.DG Russia_NorthOssetian.DG
3688  S_North_Ossetian-2.DG Russia_NorthOssetian.DG
4054            NA20795.SG                  TSI.SG
4123        S_Turkish-1.DG              Turkish.DG

- again, we see more  Adygei in the list and not that many Alans or Sarmatians. 
I have 15 sarmats: from Kazakhstan and Hungary in this dataset, however none of them is matching to this individual.

[TanTin]

Again  for the Roman Sarmatian  ( Offord Cluny 203645  or C10271 ) .
I did additional filtering with the recommended options:

5) FILTERING (note that it is possible to do it in one step by excluding the expression: ID=="." || QUAL<25 || QUAL=="."

During my first processing and alignment  I used only  ID=="." .
Now with the additional filtering for quality I have these  3 new files for the same individual which are: ERR12246909 ERR12246912 and ERR12246910  Run Accession.

Here is the new version for the Roman Sarmatian.
(all for the same ind)

https://ufile.io/7q47b9hg

[Capsian20]

Again  for the Roman Sarmatian  ( Offord Cluny 203645  or C10271 ) .
I did additional filtering with the recommended options:

5) FILTERING (note that it is possible to do it in one step by excluding the expression: ID=="." || QUAL<25 || QUAL=="."

During my first processing and alignment  I used only  ID=="." .
Now with the additional filtering for quality I have these  3 new files for the same individual which are: ERR12246909 ERR12246912 and ERR12246910  Run Accession.

Here is the new version for the Roman Sarmatian.
(all for the same ind)

https://ufile.io/7q47b9hg

Thanks you i was trying to do a this sample G25_K13 but isnt work ( This does not appear to be a valid 23andME DNA file)

[TanTin]

Thanks you i was trying to do a this sample G25_K13 but isnt work ( This does not appear to be a valid 23andME DNA file)

Which one did you try? Sarmat01 or Sarmat_QC ?  What type of file format is used by your software? Geno,  23andME or plink (bed,bim, fam) ?