There is no way to have an arbitrary character with a specific origin (if you can specify the character's name, no NPCs in the game could know them by name, etc). The origin would need to be related to something else (a relative, apprentice, employee, etc of a known person or organization), and all interactions would have to be restricted to being gender and racially neutral.
You know, there was another RPG - one with fully voiced NPCs even - which also had player character origin stories as one of its major selling points and managed to handle full character customisation (given name, sex, and when appropriate also race) within those Origins just fine almost a decade ago...
As well when I heard origins originally said I NEVER EVER EVER thought it meant pre-gen characters and in fact I bet you NO ONE ever thought they were...
In fact I'll go even further and the original videos shown for the game showed backgrounds as not being tied to specific characters.
In fact even the current information remains incredibly vague as to whether the game will have Non-generic Non-pregen origins.
QFT