Castle Waiting/WMG

Jain is Beauty from "Beauty and the Beast"

 * Her father is a merchant and she has two sisters: one is into intelligence and the other into beauty. In the original story of Beauty and the Beast, Beauty's father is a merchant who loses all his money. And one of her sisters marries a man who is intelligent, and the other marries a man who is beautiful. Add this with the fact that Jain had a child with a Leshy/Beast and it seems logical.

Henry's son is actually alive

 * And is the frog from the "Frog Prince" story. At the end of that story, a footnote character, Iron Henry, loses the mental bands around his heart when he finds the Frog Prince has been returned as a human. And all we know about Henry's son is that he was lost to an enchantment.