As already said, Bank loves beggars, but Poor house also hates them.
Torturers can be so nasty, sometimes when you suffer from them even Mountebank's poison doesn't affect you anymore.
(if you take the curse in hand then discard it...)
Catching a peddler wandering somewhere is easy (especially when lots of people help you ; you may also often see one of them near worker's villages, wharves and at festivals where they have lots to sell) then denounce him to a bishop to punish him and he'll reward you very well.
You buy border villages because they have good things to bring to you, but then why don't you consider it as whole part of your deck ? "Dire law of the business, my friend, we call it trash-for-benefit !"
(not an interaction, but...)
Militia didn't want to meet other people in the council room... so they sent a margrave to represent them.
EDIT : harem joke :
A woman from the harem was upgraded... now, she works into a forge !