Comment by RandomBacon

Thank you for the explanation and further details about the middle name.

I don't think there is such a thing as a "government name". There is a concept of "legal name" which seems to be just whatever name is on your ID. Anyone can change their name on a whim, the only issue is getting that changed on important/vital documents (as well as companies to recognize the name change, for which they have policies of requiring legal documents). There is a public interest in not letting people "change" their names too easily/often as that is a common way for criminals to evade.