Board Thread:Spoilers!/@comment-26443838-20160203031256/@comment-2153169-20160421105745

HarryPotterRules1 wrote: Personally, I believe that Jonathan is not Zelena's father and that Rumple is and that Zelena is Rumple's second born child... which is why Hades wants her in the Underworld; it fulfils his deal and gets Rumple back to our world and let free to murder again. He was scaring Belle to make her react like she did with Gaston to get more souls.

And, concerning the person above who worried about incest, A&E will probably go down the route of: she's bio family... so it can't be true love in any way other than platonic/familial, rather than romantic. It is just completely impossible. Timeline wise. Cora first met Rumple a waaaaay after Zelena's banishment to Oz.