Zieliński (Polish pronunciation: [ʑɛˈlij̃skʲi]; feminine Zielińska, plural Zielińscy) is the eighth most common surname in Poland (91,522 people in 2009), and is also common in other countries in various forms. The first Polish records of the surname date to the 15th century. Without diacritical marks, it is spelled Zielinski. The Russianized form is Zelinski (Зелинский). Origin. Polish surnames ending in "-ski" are of toponymic origin, meaning they identify someone as an inhabitant of a given community, and not through association with what the name's root meant.
https://en.wikipedia.org/wiki/Zieli%C5%84ski