Thanks for these addings.
I had always heard about a greek origin for Agnès, and meaning “pure”, so yes it’s probably different from Anissa…
These are all still common in Scotland.
“Scandinavian” - Johanne, Hanne, Hanna
Diego, at least in San Diego, comes from Saint Didacus, whose name comes from the root that gives us “didactic” in English. The resemblance to Santiago is a nice coincidence. You’ll find lots of sites to support either side, but the sound changes are more regular from Latin Didacus > Spanish Diego.
On another note, “Katherine” becomes “Caitlín” in Irish, pronounced cat-lean but with a “slender” [t]. Since it’s not the same as an English [t], English speakers often heard [th] as the nearest equivalent sound, thus “Kathleen.” The pronunciation “Kate-lynn” is an abomination. (Actually, it’s quite a pretty sounding name, but I wish people wouldn’t go around misrepresenting it as somehow Irish, is all. It’s from the same American tradition that brings us the other double-barreled female names.)
My Mother’s name is Hannah and she was always called Siobhán at school (back in the days when they didn’t speak much English in Irish schools)
My old buddy is dating a girl whose name is Catriona. Her father is from Scotland and her mother is from Vietnam.
The first time I said her name, I approximated what I understood to be the correct Gaelic pronunciation – close to “Katrina.”
I was told “That’s a very common mistake. It’s actually pronounced Kat-ree-OH-na.”
I was so horrified, I have been unable to speak her name aloud since.
As mentioned, Stéphane is also used. Stéphane is far more popular in Quebec than Étienne is.
Sorry about this tangent…it’s sort of full circle.
About the 12 disciples, what were their original (Hebrew) names? Be as phonetic as you need to be.
We’ve already got Yakov or Yakob (for James and John…although why 2 brothers would have the same name is beyond me).
I’m guessing Simon is Shimon and Judas was Judah but I’m a little stumped on the others.
Thaddeus (also called Jude)?
Andrew?
Matthew (also called Levi) and Matthias?
Thomas?
Phillip?
Bartholomew (also called Nathanael)?
I know a German named Mikal. And a Hungarian named Mihaly (pronounced, roughly, Mee-hy). (But Hungarian Miklos is Nicholas.)
John is actually Yohanan, which you should know since it’s the title of the thread. 
Andrew is Andreas in Greek, and according to wikipedia a hebrew name isn’t given.
I could research the others on wikipedia as well… but I’m already bored with it…