Board Thread:The Panopticon/@comment-4028641-20151101035254/@comment-1827503-20160106035430

SOTO wrote: Surely we would not say Basil is the Doctor's name, though? We know that's a secret he would not reveal, so it can be deduced that Basil is not the Doctor's real name. If Basil is not the Doctor's real name, and Petronella is only ever used in the same context as Basil, then we cannot say Petronella is Osgood's first name.

I'm not suggesting saying in the article that she lied, because it's not explicitly revealed in the script. But we mention that she claimed it was her name, and do not consider that to be her true name at all. This is pretty much what I'm trying to say. Barring out-of-universe evidence and a policy change to allow such information, we cannot say for certain that "Petronella" is her first name.