Question

Why most of the Polish surnames end with '...ski' ?​

Answer 1

Answer:

Polish last names were most often derived from places, family patriarchs or nicknames. Names derived from places usually ended in -ski, meaning "of", and were reserved for nobility.

Explanation:

The suffix, -ski (feminine: -ska), has been restricted to the nobility in eastern Europe and some parts of central Europe since the High Middle Ages. It was the equivalent to nobiliary particles appearing in the names of nobility, such as in the Germanic von or zu.