Where does “Hedviga” come from?

Hedviga (Slovak) comes from German Hedwig, from Old High German Hadwig, from Proto-Germanic Haþuwīgą, from Proto-Germanic haþuz, from Proto-Indo-European kéh₃tus, from Proto-Indo-European -tus — Derives action nouns from verb roots.

Ancestry of “Hedviga”, step by step

StepLanguageWordMeaning
1GermanHedwig—
2Old High GermanHadwig—
3Proto-GermanicHaþuwīgą—
4Proto-Germanichaþuzbattle, fight
5Proto-Indo-Europeankéh₃tusfight
6Proto-Indo-European-tusDerives action nouns from verb roots
Every word from Proto-Indo-European -tus →Every word from Proto-Indo-European kéh₃tus →Every word from Proto-Germanic haþuz →