Where does “rozmárok” come from?

rozmárok (Hungarian) comes from Hungarian rozmár, from New Latin rosmarus, from Old Norse rosmhvalr, from Old Norse hvalr, from Proto-Germanic hwalaz, from Proto-Indo-European (s)kʷálos — large fish; sheatfish.

Ancestry of “rozmárok”, step by step

StepLanguageWordMeaning
1Hungarianrozmárwalrus
2New Latinrosmarus—
3Old Norserosmhvalrwalrus
4Old Norsehvalrwhale
5Proto-Germanichwalazwhale, sheatfish
6Proto-Indo-European(s)kʷáloslarge fish; sheatfish
Every word from Proto-Indo-European (s)kʷálos →Every word from Proto-Germanic hwalaz →Every word from Old Norse hvalr →