The name 'Zanko' may be a variation of a Slavic composite that originally consisted of three components *3a-ne-vid. However, due to truncation and suffixation, the name has taken forms such as 'Zanko'. Examples of the name's usage: - 1552 - Vorobievich Zanko (OKiZ 114);- 1649 - Cossack of the Korsun Regiment Dmitro Zanko (RVZ 145), Cossack of the Bratslav Regiment Havyrylo Zanenko (RVZ 262);- In 1435, in the town of Suceava, the courtyard of Zanka is mentioned - town of Kazimir (SSUM I 379);- 1542 - uncle’s children Zantsi (Rev 312-313);- 1552 - Zanko Kozakowicz (Arch YuZR 7/1 149);- 1616 - serf Zani Reprenics - village of Bilovezha (Chu Imena 184);- 1393 - "Iwan filius Zaan Rutenicommorarentur" - village of Chaslivtsi in Uzhhorod region (Zsigmondkori 311);- 1616 - serf Zaniko Rusznak - village of Dobroslava (ibid);- Patronymics of 1649: Cossacks of the Korsun Regiment Danilo Zaychenko and Roman Zankevych (RVZ 145, 142).Among the various theories regarding the origin of the name, there is also an opinion that the personal name Zanko could have been derived from a calendar name starting with 'Za-', for example, Zavid or Zakhar (Rymut II 724). The name was primarily used among populations living in close proximity to Poles.