Where does “Bergambacht” come from?

Bergambacht (Dutch) comes from Middle Dutch ambacht, from Old Dutch ambacht, from Proto-Germanic ambahtaz, from Gaulish ambaxtos, from Proto-Celtic ambaxtos, from Proto-Indo-European h₂eǵ- — to drive.

Ancestry of “Bergambacht”, step by step

Step	Language	Word	Meaning
1	Middle Dutch	ambacht	job, duty
2	Old Dutch	ambacht	—
3	Proto-Germanic	ambahtaz	servant
4	Gaulish	ambaxtos	vassal, high-ranking servant
5	Proto-Celtic	ambaxtos	servant
6	Proto-Indo-European	h₂eǵ-	to drive

Every word from Proto-Indo-European h₂eǵ- →Every word from Proto-Celtic ambaxtos →Every word from Gaulish ambaxtos →