[jaclaz]

There are some limitations in Italy too, though a little less restrictive than those in Denmark or Germany, JFYI, a rough English translation:

Art. 34 (Name Attribution Limits)

    1. It is forbidden to impose on the child the same name as the living father, of a living brother or sister, a surname as a name, names ridiculous or shameful.

    2. Alien names that are imposed on children who have the Italian citizenship must be expressed in letters of the Italian alphabet , with the extension to the letters: J, K, X, Y, W and where possible, using the diacritic marks proper to the alphabet of the name source language.

    3. Childrens of unknown parents may not have names or surnames that may represent a reference to their natural origin, or surnames of historical importance or belonging to families particularly well known in the place where the birth act is formed.

I believe that some limitations do exist in all or most countries, the mentioned article just enumerates 8 of them.