I had a fine through the post for using the phone whilst driving that had my name spelt incorrectly (an extra 'e' inserted).
The Garda was copying my name straight off my licence... how inept do you have to be to get into the Gardai...?
Anyway, I've read here somewhere before that the spelling is not important and if it were to go to court it would be deemed an acceptable error. The fine is obviously for you despite the spelling mistake.
If its of any help to you, I sent a cheque through the post.