Where does “Eichsfeld” come from?

Eichsfeld (German) comes from German Eiche, from Middle High German eich, from Old High German eih, from Proto-West Germanic aik, from Proto-West Germanic *-ilā, from Proto-Germanic aiks, from Proto-Indo-European h₂eyǵ- — goat; oak.

Ancestry of “Eichsfeld”, step by step

Eichsfeld traces back through two separate lines of ancestry.

via German Eiche

StepLanguageWordMeaning
1GermanEicheAn oak tree, an oak, "Quercus"; the common tree;...
2Middle High Germaneich
3Old High Germaneihoak
4Proto-West Germanicaikoak
5Proto-West Germanic*-ilāForms feminine agent nouns, especially of plants and animals
6Proto-Germanicaiksoak tree; oak
7Proto-Indo-Europeanh₂eyǵ-goat; oak

via German feld

StepLanguageWordMeaning
1Germanfeldfield plot of open land, especially one used to grow crops
2Middle High Germanvëlt
3Old High Germanfeld
4Proto-West Germanicfelþufield
5Proto-Germanicfelþuzfield, plain
6Proto-Indo-Europeanpelh₂-to approach
7Proto-Indo-Europeanpel-to cover, to wrap; skin, hide, cloth; to fold
Every word from Proto-Indo-European h₂eyǵ-Every word from Proto-Germanic aiksEvery word from Proto-West Germanic *-ilā