Where does “de Graaf” come from?

de Graaf (Dutch) comes from Dutch Graaf, from French gravé, from Middle French grave, from Old French gravé, from Medieval Latin grava, from Gaulish grawa, from Proto-Celtic grāwā, from Proto-Indo-European gʰroh₁weh₂ — to grind.

Ancestry of “de Graaf”, step by step

de Graaf traces back through two separate lines of ancestry.

via Dutch Graaf

StepLanguageWordMeaning
1DutchGraafAlternative letter-case form of graaf
2Frenchgravépast participle of graver; burned
3Middle Frenchgravegravel
4Old Frenchgravégravel
5Medieval Latingrava
6Gaulishgrawa
7Proto-Celticgrāwāgravel, pebbles
8Proto-Indo-Europeangʰroh₁weh₂
9Proto-Indo-Europeangʰreh₁w-to grind

via Dutch de

StepLanguageWordMeaning
1Dutchdethe
2Middle Dutchdiethe; definite article; that, those; who, which,...
3Old Dutchthiethat, that one; that
4Old Dutchthē
5Proto-Germanic*sa
6Proto-Austronesian*əsa
7Proto-Oceanic*isa
Every word from Proto-Indo-European gʰreh₁w-