Proper names like Erin, Kyle, Sam, etc. are not spelled differently in French. The spelling of your name is to remain the same. Counterpoint. If your last name is a color like Brown, Green, etc. you will not use the French words Brun or Verde for them, you would retain your name as is.
The same, Erin
Erin
It is the same in Italian as it is in English: Erin.
Erin
Eyrn
"How do you spell it in French?" is "Comment ça s'écrit en français?"
"Ajouter" is how you spell "add" in French.
Spell Ryan in french
this is how you spell spelling in french: l'orthographe
Erin in Greek
It's spelled the same.
How to spell the name Joseph in French