It’s thought that the green-eyed, blonde people in an area of China may owe their coloring to the survivors of a Roman battle going back to the first century BC - the ‘Lost Legion of Crassus’.
If a genetic influence can be that old, I doubt many people can know who all their ancestors may have been or where they traveled back then.
https://www.warhistoryonline.com/ancient-history/romans-china-lost-legions-carrhae.html
That’s true; the Ancient Romans and Greeks ( Alexander ) went almost everywhere! But I doubt that they had hazel eyes coloring.