Khazarian Mafia,
The Thirteenth Tribe by Koestler.
"Koestler advances the thesis that Ashkenazi Jews are not descended from the historical Israelites of antiquity, but from Khazars, a Turkic people originating in and populating an empire north of and between the Black Sea and Caspian Sea. Koestler's hypothesis is that the Khazars - who converted to Judaism in the 8th century - migrated westwards into current Eastern Europe (primarily Ukraine, Poland, Belarus, Lithuania, Hungary and Germany) in the 12th and 13th centuries when the Khazar Empire was collapsing."
Book free in archive here:
https://archive.org/details/arthurkoestlerthethirteenthtribe/mode/1up
Ashkenaz descendant of Japheth.
https://www.biblegateway.com/passage/?search=Genesis%2010&version=GW
Khazarian Mafia,
The Thirteenth Tribe by Koestler.
"Koestler advances the thesis that Ashkenazi Jews are not descended from the historical Israelites of antiquity, but from Khazars, a Turkic people originating in and populating an empire north of and between the Black Sea and Caspian Sea. Koestler's hypothesis is that the Khazars - who converted to Judaism in the 8th century - migrated westwards into current Eastern Europe (primarily Ukraine, Poland, Belarus, Lithuania, Hungary and Germany) in the 12th and 13th centuries when the Khazar Empire was collapsing."
Book free in archive here:
https://archive.org/details/arthurkoestlerthethirteenthtribe/mode/1up