Where does “Kalsøe” come from?

Kalsøe (Old Norse) comes from Old Norse kalfr, from Proto-Germanic kalbaz, from Proto-Indo-European gʷolbʰo — womb, animal young.

Ancestry of “Kalsøe”, step by step

StepLanguageWordMeaning
1Old Norsekalfrcalf
2Proto-Germanickalbazcalf
3Proto-Indo-Europeangʷolbʰowomb, animal young
Every word from Proto-Indo-European gʷolbʰo →Every word from Proto-Germanic kalbaz →Every word from Old Norse kalfr →