Where does “hene-” come from?

hene- (Manx) comes from Manx hene, from Old Irish [[fadéin]], [[féin]].

hene- (Manx): self-, auto-

Definitions

Step	Language	Word	Meaning
1	Manx	hene	self; own; "
2	Old Irish	[[fadéin]], [[féin]]	—

hene- — Etymology, Origin & Word History | Etymology Explorer