The King is dead. Long live the King!
Thomas is five years old.
His father, King of all England, just died, meaning Thomas is now ruler of the whole country. He doesn't have a lot of supporters, however. As England teeters on the brink of war, many of his subjects would prefer a leader with more experience. Also, there are many around him who would benefit from his death, not to mention all the people who would have a good chance at the throne themselves, if only Thomas would disappear. All in all, he doesn't have many friends or well-wishers, and his odds of living long enough to see six don't look particularly good.