Some questions

[sun-star]

(First of all, I know the answer to this question is "Lewis didn't think it was important"; I think The Silver Chair is a fantastic book and no one loves Caspian more than me. But go along with it...)

I only just realised that we never find out in the books what happens to Queen Prunaprismia after Miraz's death and more importantly, what happens to her baby son. Do they choose to leave Narnia at the end of Prince Caspian? Surely it would be very foolish for Caspian (and his advisors, Aslan at this stage) to let this child disappear. As Miraz's son, he's Caspian's cousin, the nephew of Caspian IX, and if Narnian laws of succession are the same as ours, which they seem to be, he's Caspian's only heir until Caspian himself has a son. If Caspian were to die without issue, this boy would be the next king of Narnia. A useful person to have around, you'd think.

Of course, this doesn't matter while Caspian is young and has many years ahead of him - while he's the king we see in Prince Caspian and The Voyage of the Dawn Treader. But when Caspian's wife dies and Rilian is lost, Caspian "has no prince of his blood to be king after him" (Aslan's words in The Silver Chair), and won't even allow anyone to go in search of Rilian, because so many people have died trying. Hence Jill and Eustace's quest, Caspian's last voyage to Aslan, etc. It seems to me this could all have been avoided if someone had had a little foresight at Caspian's coronation...

So, speculation time:
What do you think happened to Prunaprismia and her son? Why didn't Aslan get Caspian to keep the boy around, just in case? And what would have happened to Narnia if Jill and Eustace had failed in their quest, and Rilian hadn't been found?