Khazars Outside Khazaria
Khazar communities existed outside those areas under Khazar overlordship. Many Khazar mercenaries served in the armies of the Caliphate and other Islamic states. Documents from medieval Constantinople attest to a Khazar community mingled with the Jews of the suburb of Pera. Christian Khazars also lived in Constantinople, and some served in its armies, including, in the 9th and 10th centuries, the imperial Hetaireia bodyguard, where they formed their own separate company. The Patriarch Photius I of Constantinople was once angrily referred to by the Emperor as "Khazar-face", though whether this refers to his actual lineage or is a generic insult is unclear.
Abraham ibn Daud reported Khazar rabbinical students, or rabbinical students who were the descendants of Khazars, in 12th century Spain. Jews from Kiev and elsewhere in Russia, who may or may not have been Khazars, were reported in France, Germany and England.
Polish legends speak of Jews being present in Poland before the establishment of the Polish monarchy. Polish coins from the 12th and 13th centuries sometimes bore Slavic inscriptions written in the Hebrew alphabet though connecting these coins to Khazar influence is purely a matter of speculation.
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