… "legal name" is "things programmer's believe about names" grade. Maybe (name, jurisdiction), but I've seen exceptions to that, too.

Where I live, no less than 3 jurisdictions have a say about my "legal" name, and their laws do not require them to match. At one point, one jurisdiction had two different "legal" names for me, one a typo by my standards, but AFAICT, both equally valid.

There's no solution here, AFIACT, it's just evidence towards why computers cannot be accountability sinks.