You may want to know (in the interest of Everything's international character) that this does not happen in all countries. For example, in Italy (and, AFAIK, in France) there is no such thing.
One reason why this has not occurred to anybody in Italy is that to legally add, subtract, or change anything in your name you need a decrete by the President of the Republic, which is produced only through intense pain and expenditure in court.
At my confirmation, I almost crossed myself with my left hand. Chatechism had not been that good, you know, and I am left-handed.