Where does “Scharnhorst” come from?

Scharnhorst (Middle Low German) comes from Middle English scharn, from Old English sċearn, from Proto-West Germanic *skarn, from Proto-Germanic skarną, from Proto-Indo-European sḱer- — to caw, crow.

Ancestry of “Scharnhorst”, step by step

StepLanguageWordMeaning
1Middle EnglishscharnAnimal feces used as fertiliser; manure or sharn
2Old Englishsċearndung
3Proto-West Germanic*skarn—
4Proto-Germanicskarnąfilth, dung
5Proto-Indo-Europeansḱer-to caw, crow
Every word from Proto-Indo-European sḱer- →Every word from Proto-Germanic skarną →Every word from Proto-West Germanic *skarn →