Most of the Russian nobility were not ethnically Russian to begin with.
Many , many karaims in Russia were hereditary nobles.
Karaim, from the Hebrew word קראים, meaning "readers", refers in the literal sense generally to practitioners of the Karaite sect of Judaism. In customary usage, however, it is often used to refer to the distinct Turkic-speaking Karaite community of Crimea and the related community of Karaites living in Lithuania and elsewhere in Eastern Europe, as well as to their language
Karaite Judaism is a Jewish denomination characterized by the sole reliance on the Tanakh as scripture, and the rejection of the Oral Law (the Mishnah and the Talmud) as halakha (Legally Binding, i.e. required religious practice). The word "Karaite" comes from the Hebrew word קְרָאִים (Standard Hebrew Qəraʾim; Tiberian Hebrew Qərāʾîm), meaning "Readers (of Scripture)." This name was chosen by the adherents of Karaite Judaism to distinguish themselves from the adherents of Rabbinic Judaism.Because the Karaims were judged to be innocent of the death of Jesus, they were exempt from many of the harsh restrictions placed on other Jews in Russia.
Baron Joseph Günzburg - Industrialist
Horace Günzburg - Financier, Industrialist
Baron Alexander Günzburg
Baron David Goratsiyevich Günzburg - Russian Orientalist, Jewish Communal Leader
Nicolas de Gunzburg - socialite, editor, actor, producer.
Baron Peter Shafirov (1670–1739), vice-chancellor of Russia, under Peter the Great
Babanin family is a noble family that originated in the Tsardom of Russia.
Grinkrugi
Ephron
Ephrussi family
Kanegissery
Krupa/Kruppa
Polyakova
Dobrowolski Counts (later Dobrow), Russian and Polish family[5]
Gantsmakher
Khaykin
Ransohov
Wertheim (Poland)
Menschikoff
All Jews who were part of the "Russian" nobility.