[quote=@Partisan]
<Snipped quote by WilsonTurner>

I have very little to demand from a set of travellers, and carrying weapons is not illegal. 
[/quote]

You're not too terribly political, are you? Not to offend, being non-political and all is fine, but you might want to think a bit more political for having a political position.

Things a lord, king, or some other noble might think when seeing Kaz and his kinsmen approaching:
A) Such horses have never been seen
B) Such armor is not used quite so often, especially not with the unfamiliar coloring or design
C) The men themselves are different, obvious foreigners among the natives
D) Kaz's armor is a masterwork, signifying wealth, position, or something else of significance
E) The uniformness of the armor (save Kaz) suggests that they aren't likely to be a mercenary or bandit group, and that Kaz holds a much higher position in them

From those, a noble might come to a number of conclusions or theories:
1. They are dealing with a foreign state, or nation, and that means possible political allies
2. They are dealing with a group of hard mercenaries or bandits, who have presumably made their own sort of base and are trying very hard to infiltrate one place or the other
3. They are an independent outfit, roaming for personal reasons or something else

And so they might take the following actions:
I. Invite them in for a chat or somesuch, in a gesture of kindness (currying favor, somewhat)
II. Invite them in for the night, with a stiff warning against exploring or anything (Neutral, giving shelter and that's about it, possibly offensive)
III. Order them to be executed for trespassing or some other reason, and send soldiers to take them down (Hostile)
IV. Welcome them in with open arms, and offer food, drink, rooms, etc. (very much currying favor)
V. Try to figure out everything Kaz and his men know before coming to any decision (Possibly offensive; wary)

The world of politics is much deeper than one might think- even I am not getting to the full scope of politics. I know very little other than a great many books. Simply saying that they have nothing to say isn't really good if they're a noble. Born and raised one, they'd know that a group of very much unknown armed soldiers could mean a great many things- either a new ally, trading partner, or enemy. 

Also, many medieval societies had nobles that treated their peasants as if they were literally objects- it was very hard for a Baron or Lord to realize that their people even had feelings, because those people weren't individuals, they were simply [i]theirs.[/i] That, and it actually was illegal for peasants or lower class to carry weapons. A better way to keep rebellions from rising up, you know? And Barons and Lords and all those people were most certainly inclined to prevent them, since they were often ambitious political figures.

So no, saying that he 'has nothing to say to them' is very much unlike a character who is in a noble family.