Board Thread:General Discussion/@comment-5679696-20130311021240/@comment-24674051-20150908145028

One point to the line to the throne. Spouses generally do not have claim to the throne unless they are legimate heirs in their own right, and then they have their own position in the pecking order.

To be 5th in line at the time, all Henry would have needed is 1 older sibling with a couple of nieces/nephews. The King is obviously first, then the older sibling (probably male, but wouldn't have to be), then their oldest child, then the second oldest child, then finally Henry. Cora would NEVER have a place in line for the throne, except as the wife of the ruling Monarch. Regina would likely be next in line after Henry. (Yes, Zelena is older, but is not of the Royal Bloodline, and is a bastard child besides).