Can also be back biblical. Let us break it down so it is forever broken.
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. 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.
The Thirteenth Tribe: The Khazar Empire and Its Heritage