Ashkenazi jews are not Polish. They were required to adopt surnames in the 1700s by order of Catherine the Great. DNA shows that Ashkenazis are simply the jews who crossed over into the Italian peninsula after the Roman expulsion in the first century AD. There, they took brides in the region. Virtually all of the European content of Ashkenazim is from four Italian women from this period. from 200-300, in order to keep the dispersed Jewish population on the same page, the tanakh and the Talmud were written down and rabbinical Judaism was created. the strict regulations on personal habits and hostility to gentiles ecoded within Halakic law determined that jews remained genetically distinct from Europeans over the intervening centuries. Jews made their way north through the continent, expulsion-to-expulsion, not arriving in Central Europe until the 1250s. despite the passage of seven centuries, Germans and Slavs share eight times more genes than either does with Ashkenazim.
Mark Cuban - His paternal grandfather changed the surname from "Chabenisky" to "Cuban" after his family emigrated from Russia through Ellis Island.
Jason Alexander - Jay Scott Greenspan
Jon Stewart
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Jews Who Change Their Names from Jewish Names to White Names https://www.stormfront.org/forum/t20615/
100 Jews who changed their names
https://www.youtube.com/watch?v=gFBtQj_UADM