Board Thread:General Discussion/@comment-4988514-20130307165550/@comment-4975807-20130525215535

209.6.57.214 wrote: what if Cora and Rumple had a child and it is Regina? Regina is NOT their child.

Proof from Jane Espenson, one of the writers on the show:

https://twitter.com/JaneEspenson/status/310949964014555139