This is the 6033rd most frequent Catalan word.
kiedrzyński
It seems "kiedrzyński" is not a Catalan word; it appears to be a Polish surname.
Here, 'Kiedrzyński' is used as a proper noun, specifically as a surname.
El cognom de l'autor de l'article és Kiedrzyński.
The author's surname in the article is Kiedrzyński.
In this sentence, 'Kiedrzyński' is referred to as the player's name who used to be part of the team.
L'equip de futbol tenia un jugador anomenat Kiedrzyński a la temporada passada.
The football team had a player named Kiedrzyński last season.
Here, 'Kiedrzyński' is used as the name of a museum, showing its use as naming for institutions.