It's entirely valid, you just have to understand the basic premise of what a name is, which is:
You do not determine what your name is, your name is how you are known. Your name is chosen by your parents out of convenience to distinguish you, it doesn't have any value beyond an indentifying code. If you know you as Elliot then that's great, but other people know you as Ellen and so your name is Ellen as that is how you are known. It's no different to being known as a drunk or a womaniser, it's an identifier.
What's completely unacceptable is to say "You don't know me how you think you know me, you know me by X because I said so." You do not decide what other people think and feel, that is completely off-limits to you and to think you can dictate that to people is completely disrespectful of their autonomy.
You don't actually interact with very many people, do you?
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