Because it doesn't say it anywhere on any of the books? And websites (including Amazon) call it Bastards with an s?"hence why it's called The Gentleman Bastard, singular"
How is it I never picked up on this before?
I don't know how anyone would have even known that unless he says it on his website or something, and fuck if I'm going to analyze an author's website just to catch something like that.
He may have planned it this way all along, but he certainly hasn't been spreading the whole "Bastard" singular thing all over the place for us to pick up on. I'm sure someone will point to a reference somewhere that I'm not aware of, but from just reading the damn books this whole "plan" could have hatched after the first couple sold well too.