Rubuta ci gaba don wannan sakin layi - Tuni a cikin karni na 16 wasu daga cikin dangin sun yi aiki a matsayin Cossacks. A shekara ta 1551, Ivan the Terrible ya tura dukkan garkuwar Moscow zuwa gabas don samar da dakarun soja don sabon kagara na Sviyazhsk don kamfen dinsa akan Kazan
Ka yi haƙuri. Daya daga cikin ataman Cossack na Sviyazhsk shi ne Alexey Kobyzev, wanda ya jagoranci sojojin Cossack a cikin yaƙi da Chuvashy a 1552. An rasa yaƙin kuma Cossacks sun yi asarar mutane 70.