Where does “Dolna Saksonia” come from?

Dolna Saksonia (Polish) comes from German Niedersachsen, from German nieder-, from German nieder, from Middle High German nider, from Old High German nidar, from Proto-Germanic niþer, from Proto-Indo-European niter.

Ancestry of “Dolna Saksonia”, step by step

StepLanguageWordMeaning
1GermanNiedersachsen—
2Germannieder-A prefix; equivalent to down-
3Germanniederlow; mean; menial
4Middle High Germannider—
5Old High Germannidardown
6Proto-Germanicniþerdown, downwards
7Proto-Indo-Europeanniter—
Every word from Proto-Indo-European niter →Every word from Proto-Germanic niþer →Every word from Old High German nidar →