This is the 9543rd most frequent Polish word.
wokulskiego
"Wokulskiego" is the genitive singular form of "Wokulski," a surname of a character from the Polish novel *Lalka* (The Doll) by Bolesław Prus. It refers to something "of Wokulski" or "related to Wokulski."
Possessive usage indicating something related to Wokulski, showing his interests.
Wokulskiego bardzo interesowały wynalazki technologiczne.
Wokulski was very interested in technological inventions.
Possessive usage indicating the works or creations associated with Wokulski.
Przyglądałem się dziełom Wokulskiego, które miały ogromny wpływ na rozwój handlu.
I was observing Wokulski's works, which had a huge impact on the development of commerce.
Possessive usage indicating something related to Wokulski, in this case, his friend.