Where does “Kádár” come from?

Kádár (Hungarian) comes from Hungarian kádár, from Hungarian Kadar.

Ancestry of “Kádár”, step by step

Step	Language	Word	Meaning
1	Hungarian	kádár	cooper; A judge or a priest in the Hunnish-Magyar...
2	Hungarian	Kadar	—

Kádár — Etymology, Origin & Word History | Etymology Explorer