Nb. the name Wilhelm is of german origin and has not been in much use in Poland
WILUŚ is the Polish diminutive for WILHELM. It carries a contextual meaning - ranging from irony and sarcasm to warmth and friendship.
Kajzer Wiluś - a pompous German Emperor and Prussian King Wilhelm II;
162 surnames Wiluś in Poland;
Wiluś E. Kojot i Struś Pędziwiatr - Wile E. Coyote and Road Runner;
Wiluś, the gentle workhorse - saw his picture somewhere;
Wiluś, privately owned narrow gauge steam locomotive, taking tourists for a ride every weekend.
Tomek i przyjaciele: Wiluś, Benio i Franek <= Thomas & Friends (Thomas the Tank Engine & Friends until 2002), from a British children's television series.