[Psalm 144]

Entirely possible, but Aryan, Turkic and even Norse gene pools sloshed back and forth over the steppes for several millenia, and worked both ways as a few Sarmation units may have made it to Britain. Still the concentration in a settled society is unusual, and may well be Romans.

[GreenLanternCorps]

[muawiyah]

The Mongol Empire was given to shipping people hither and yon ~ but to get green eyes you have to have the gene(s) for red/yellow or brown/yellow pigment ~ (same kind, just a variation in expression) ~ and that means not only "white blood", but Celtic Fringe "white blood" ~ and you could get that delivered to you directly over the last 1,000 years, or kind of indirectly over the last 4,000 years via the Silk Road.

Chinese appear to be the only ones ever surprised to find that there's a Scotsman in the Woodpile eh!

[bigheadfred]

May be the same people as these.

http://discovermagazine.com/1994/apr/themummiesofxinj359

[max americana]

Entirely possible race-wise. My former Mexican landlords here in Hollywood can EASILY pass as Irish. People dont know there are 2 kinds of Mexicans, the aztecas (dark) and the mestizos (white). The mestizos were direct descendants of the Spaniards. There were countless times the couple were being invited for St paddy’s Day and they have to explain countless times they were originally from Cabo.

[Verginius Rufus]

Some medieval Buddhist texts from Central Asia (on the Silk Route, I think, but I don't know if any of them were found within the borders of China) were in two closely-related languages which are called Tocharian A and Tocharian B. They are part of the Indo-European family of languages but more closely related to the western languages (Celtic, Italic, Greek) than to the most eastern languages (Indo-Iranian or Slavic). Who knows what other languages were spoken in the area but never recorded.

The Chinese word for horse, ma, may be a loan-word from an Indo-European language (and cognate with the English word "mare").

Maybe some of the Macedonians settled in Central Asia by Alexander the Great got restless and moved further east.