What laws?  In the UK I can us any name I like so long as I don&#x27;t have the intent to deceive.  WIkipedia says that&#x27;s the case for the US<p><a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Legal_name#United_States" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Legal_name#United_States</a><p>&gt; 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&#x27;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&#x27;s technically true name.[3]<p>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.