most yiddish can literally trace their heritage back to how they escaped the destruction of jerusalem. there are 3 ancient mariner routes. the significance of that is if you research the routes, you will see names like sephardim, ashkenazi, and others. what's significant about these names are they changed adopted names based upon the route they escaped from to keep hidden from the Romans they thought were chasing them. so when you read sephardim, ashkenazi jews, that is the escape route. but never make the mistake like you have and continue to believe these are not the jews from Jacob's Lineage.