Where does “Luthersch” come from?

Luthersch (German) comes from German Luther, from Old High German Liutheri, from Proto-Germanic *Liudihari, from Proto-Germanic *hari, from Proto-Germanic harjaz, from Proto-Indo-European kóryos, from Proto-Indo-European ḱer-, from Proto-Indo-European kr̥- — army.

Ancestry of “Luthersch”, step by step

StepLanguageWordMeaning
1GermanLuther
2Old High GermanLiutheri
3Proto-Germanic*Liudihari
4Proto-Germanic*hari
5Proto-Germanicharjazarmy; army leader; commander; warrior
6Proto-Indo-Europeankóryoswar; troops; army; war, troops
7Proto-Indo-Europeanḱer-to grow, to make grow, to nourish; to plait,...
8Proto-Indo-Europeankr̥-to turn, to bend
9Proto-Indo-Europeanker-army
Every word from Proto-Indo-European ker-