Where does “dobby” come from?

dobby (English) comes from English Dobbie, from English Dobb, from English Robert, from Anglo-Norman Robert.

Ancestry of “dobby”, step by step

Step	Language	Word	Meaning
1	English	Dobbie	—
2	English	Dobb	—
3	English	Robert	—
4	Anglo-Norman	Robert	—

dobby — Etymology, Origin & Word History | Etymology Explorer