What exactly was medieval loyalty to the subjects? To which

I think your average peasant knew very little about the world more than 10 miles from their home. Tell them there is a king and he's wonderful and god approves, and they'll accept that's just the way things are. "It is known."

>>1438635
Well considering that the "working class" has been dumb as fuck for most of human history they probably did.
And even if they didnt it wouldnt matter, they have no education and spent their entire lives moving dirt around in one tiny village.

>>1438635
>Were all peasants as brainwashed by religion and their current ruler propaganda as we think?
Yes,although in pre-enlightenment societies thee were considered normal and positive acts.

>>1438635
>To which extent did they believe in the king's supernatural right to rule,
He didn't, Kings didn't start getting so bold as to claim divine right until the later middle ages. A feudal king was at constant odds with his barons and only maintained his position through power and politics, a weak king might not be deposed but he'd be walked all over.

OP you should read James VI's treatises on the Divine Right of Kings, Basilikon Doron and The True Law of Free Monarchies. They're in 17th century Scots so it's very difficult to read them but I think there are English versions that were printed later.