Registered Cossacks
Susanna Luber's study of registration books of the Registered Cossacks contain many surnames that indicate Jewish origin. Cossack families of Jewish origin include Hertzyk, Osypov-Perekhrest, Perekhryst, Kryzhanovsky, Markevych/Markovych, Zhydenko, Zhydok, Zhydovynov, Leibenko, Yudin, Yudaev, Khalayev, Nivrochenko, Matsunenko, Shabatny, Zhydchenkov, Shafarevich, Marivchuk, Magerovsky, Zrayitel' and others.