Depends on the language and what you'll use the name for.
Some names change capitalisation when the last name is used by itself vs full name for example.
In some languages a name affect the words around it in a sentence (for a random example, an "o" in Spanish (or) becomes "u" when the next word starts by the "o" sound -> "Carlos o Maria", but "Carlos u Oscar".
In general, for a sufficiently large and well-localised application you will need to modify or parse the name at some point. Not sure that a library can do that properly though.
