Where does “Jesper” come from?

Jesper (Norwegian) comes from Danish Jesper, from Old Norse Ásbjǫrn, from Old Norse Áss, from Proto-Germanic astaz, from Proto-Indo-European h₃ósdos — branch.

Ancestry of “Jesper”, step by step

StepLanguageWordMeaning
1DanishJesper—
2Old NorseÁsbjǫrn—
3Old NorseÁssa thick pole, main beam (in a house)
4Proto-Germanicastazbranch
5Proto-Indo-Europeanh₃ósdosbranch
Every word from Proto-Indo-European h₃ósdos →Every word from Proto-Germanic astaz →Every word from Old Norse Áss →