It could also be, perhaps, someone's given name before adoption gave them a new one. Or perhaps a meddling relative suggested a "better" name, and then the person went back to the one they were born with, leaving the relative's name idea dead.
It's not trans-exclusive (I fall into the latter category I mentioned) but it's definitely a mostly trans concept
If you'll prove that you're willing to listen, instead of denying information you're not a personal fan of, maybe I will.