How does the king react when the boys return to the castle?

The King thanks Jeremy for taking care of his son and agrees to let Jeremy stay under the Prince's protection.

"Prince Horace has caused enough mischief to wear out the hides of a dozen whipping boys. He tells me it's thanks to you that he's back, sound and safe. The king thanks you."
Jemmy took a small breath.
"You are placed under the prince's protection under one condition. He has sworn to do his lessons, blow out his night candle, and otherwise behave himself."