Board Thread:Show-Related Questions and Answers/@comment-26125643-20150511181837/@comment-4975807-20150512192752

I believe the baby Belle and Rumple had is supposed to be baby Neal. Seeing as Isaac wasn't able to write Emma out of existence, he could only trap her in the tower in the book, so with baby Neal, even though technically he (like Emma) shouldn't exist if Snow and Charming never had children, I guess he chose to just give the baby to Belle and Rumple. I think writing someone out of existence was a possibility that Isaac didn't use for some reason since Regina was going to make him write Zelena out of existence.