Where does “Gorbatjov” come from?

Gorbatjov (Swedish) comes from Russian Горбачёв, from Russian горба́ч, from Russian горб, from Old East Slavic гърбъ, from Proto-Slavic *gъrbъ.

Ancestry of “Gorbatjov”, step by step

Step	Language	Word	Meaning
1	Russian	Горбачёв	—
2	Russian	горба́ч	hunchback; humpback
3	Russian	горб	hump, hunch
4	Old East Slavic	гърбъ	—
5	Proto-Slavic	*gъrbъ	—

Gorbatjov — Etymology, Origin & Word History | Etymology Explorer