> And it's not a fake name. It's their name. You seem to think that people have this single thing which is their name - that might be true in the US (I dunno) but it's not true in many other places.
Not according to the current laws.
You may want to change the laws as well. ( No, I'm not cynical. )
> Most states in the United States follow the common law which permits name changing for non-fraudulent purposes. This is actually the most common method, since most women who marry do not petition a court under the statutorily prescribed method, but simply use a new name (typically the husband's, a custom which started under the theory of coverture where a woman lost her identity and most rights when she married).[2] Most state courts have held that a legally assumed name (i.e., for a non-fraudulent purpose) is a legal name and usable as their true name, though assumed names are often not considered the person's technically true name.[3]
In the US the different rules for getting a name changed on official documents sometimes leaves people with official documents in different names, so even if you restrict yourself to documents issued by US government authorities a person can have two names.
Yep. In my state to officially change your name all you have to do is start using the new name, though you'll end up putting both down on the "AKA" section of official documents.
Not according to the current laws. You may want to change the laws as well. ( No, I'm not cynical. )