Where does “burggrāvius” come from?

burggrāvius (Medieval Latin) comes from Old High German burggrāvo, from Old High German burg, from Proto-West Germanic burg, from Proto-Germanic burgz, from Proto-Indo-European bʰr̥ǵʰ-.

Ancestry of “burggrāvius”, step by step

StepLanguageWordMeaning
1Old High Germanburggrāvo
2Old High Germanburga castle; a city
3Proto-West Germanicburgfortification; city
4Proto-Germanicburgzfortification, stronghold; city
5Proto-Indo-Europeanbʰr̥ǵʰ-

Words derived from “burggrāvius

Every word from Proto-Indo-European bʰr̥ǵʰ-Every word from Proto-Germanic burgzEvery word from Proto-West Germanic burg