Alright, this may have been covered before... but a few thoughts came to mind as I was going over notes from Carrion Crown (Specifically the Bestiary of PT 6).
Specifically..(spoiled below) (Don't think I can quote it right out of the book.. but if I can I will add it later..)
So, some nice fluff, but here is where the person mentioned happens to show up again...
Then is there also the reference in Carrion Crown Part 5 (Urgathoa entry) talking about Urgathoa's relationship with Shelyn with some priests claiming...
I believe (although could easily be mistaken), that somewhere it talked about Urgathoa having a child? (Besides the obvious daughters of Urgathoa from the Inner Sea Guide) Possibly with said individual who somehow managed to steal the child away?? Hide it in BastardHall?? Or at least seems to be hiding SOMETHING....
Some of the individuals who have played the "BASTARD HALL" series at PaizoCon, may be able to help flesh out more of the information.
I have only played in the PaizoCon2012 "Gardens of Bastard Hall" Game, run by F. Wesley Schenider, (are allowed to post my campaign notes???) That seems to give a hint of credence?