Where does “Borghildur” come from?

Borghildur (Icelandic) comes from Old Norse Borghildr, from Old Norse borg, from Proto-Germanic burgz, from Proto-Indo-European bʰr̥ǵʰ-.

Ancestry of “Borghildur”, step by step

StepLanguageWordMeaning
1Old NorseBorghildr—
2Old NorseborgA city, town; A castle; Any fortified place
3Proto-Germanicburgzfortification, stronghold; city
4Proto-Indo-Europeanbʰr̥ǵʰ-—
Every word from Proto-Indo-European bʰr̥ǵʰ- →Every word from Proto-Germanic burgz →Every word from Old Norse borg →
Borghildur — Etymology, Origin & Word History | Etymology Explorer