Where does “Kądzior” come from?

Kądzior (Polish) comes from Polish kędzior, from Proto-Slavic kǫdrь — curl.

Ancestry of “Kądzior”, step by step

Step	Language	Word	Meaning
1	Polish	kędzior	lock of hair, curl, ringlet
2	Proto-Slavic	kǫdrь	curl