There was no intention to leak it to the outside on our side and because of that the other parties likewise shouldn’t publicize it purposely. Thus there was no reason for worry on that side either.
In my opinion, although I hope that father simply didn’t know, it wasn’t evident whether this was Kurt-nii-san’s aim either.
“Duke Hertha is the youngest child of the previous king’s younger brother.”
There was no destination although he is royalty. The Duke Hertha household, accidentally having no children, received him as adopted son.
From the point of view of His Majesty, he is equivalent to being his uncle.