No noble should debase themselves by admitting they have a brother or other relative that is an advy either, even if they only admit that to themselves. Acting on behalf of this lowly relative in the first place seems to be the biggest breach to me. The other advy is your property and had on his person gold belonging to you. Some small and reasonable level of recompense could well be due to you, depending entirely of the position of advies in your realm.
