Where does this name originate from? (possibly Mid-Eastern/Mediterranean)

Factual Questions
1

The name, Itsek Jacobi?

I’ve tried googling, but all I get are these weird foreign websites with no names, just descriptions I cannot read.

Any help?

2

Sorry, should be spelt Itsik Jacobi.

3

Well, it could be a version of the Hebrew name “Itzik Ya’akovi.” “Itzik” is a diminuative of “Yitzchak” (Isaac), while “Ya’akovi” is a fairly common Israeli surname.

4

what about the name " Eser"