I pretty much believe with every fiber of my being right now that Eva is from Oz (the Kingdom of Ev) and that Johanna came over with her as her maid when she married Leo. I think we might see a Young Johanna along with Young Eva when she meets Young Leo
I wouldn’t be surprised if they shocked us all with Young Johanna having had a child that she abandoned to go and work for royalty. Funny that when we first meet Johanna she is playing with jewels (Young Snow’s tiara) and when we first meet Z, she is playing with Reggie’s jewels.
While I’m still leaning towards Cora & Leo being the parents, yesterday’s sneak peek sure made me put Johanna on the list of suspects.