Where does “Grabowiec” come from?
Grabowiec (Polish) comes from Polish grabowy, from Polish Grab, from Polish gręby, from Proto-Slavic grǫbъ, from Proto-Slavic grěti, from Proto-Indo-European gʷʰer-, from Proto-Indo-European gʷʰe-gʷʰór-e ~ gʷʰe-gʷʰr-ḗr.