This is the 12307th most frequent Polish word.
mińskiego
"Mińskiego" is the genitive or accusative form of "miński," which means "of Minsk" or "related to Minsk."
Here, 'mińskiego' serves as an adjective, denoting something belonging to or related to Mińsk.
Ratusz mińskiego jest zachwycający.
The town hall of Mińsk is stunning.
In this context, 'mińskiego' describes the origin of the author, associating him with Mińsk in an attributive manner.
Znalazłem ciekawą książkę mińskiego autora.
I found an interesting book by an author from Mińsk.
Here, 'mińskiego' characterizes the territory belonging to Mińsk, indicating possession or relation.