Where does “ërtbere” come from?
ërtbere (Middle High German) comes from Old High German ërdberi, from Proto-West Germanic *erþubaʀi, from Proto-Germanic erþōbazją, from Proto-Germanic bazją, from Proto-Indo-European bʰeh₂-, from Proto-Indo-European bʰeh₂-s-ri-.
Ancestry of “ërtbere”, step by step