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?"
this is how you spell spelling in french: l'orthographe
Spell Ryan in french
"Ajouter" is how you spell "add" in French.
Erin in Greek
It's spelled the same.
you spell snails in french escargos