linguistic:paraphrasing
Crimean Karaites and Krymchaks

In 1839, the Karaim scholar Abraham Firkovich was appointed by the Russian government as a researcher into the origins of the Jewish sect known as the Karaites. In 1846, one of his acquaintances, the Russian orientalist Vasilii Vasil'evich Grigor'ev (1816–1881), theorised that the Crimean Karaites were of Khazar stock. Firkovich vehemently rejected the idea, a position seconded by Firkovich, who hoped that by "proving" his people were of Turkic origin, would secure them exception from Russian anti-Jewish laws, since they bore no responsibility for Christ's crucifixion. This idea has a notable impact in Crimean Karaite circles. It is now believed that he forged much of this material on Khazars and Karaites. Specialists in Khazar history also question the connection. Brook's genetic study of European Karaites found no evidence of a Khazar or Turkic origin for any uniparental lineage but did reveal the European Karaites' links to Egyptian Karaites and to Rabbinical Jewish communities.

Another Turkic Crimean group, the Krymchaks had retained very simple Jewish traditions, mostly devoid of halakhic content, and very much taken with magical superstitions which, in the wake of the enduring educational efforts of the great Sephardi scholar Chaim Hezekiah Medini, came to conform with traditional Judaism.

Though the assertion they were not of Jewish stock enabled many Crimean Karaites to survive the Holocaust, which led to the murder of 6,000 Krymchaks, after the war, many of the latter, somewhat indifferent to their Jewish heritage, took a cue from the Crimean Karaites, and denied this connection in order to avoid the antisemitic effects of the stigma attached to Jews.