Near the beginning of the episode, Mike tells Peter, "You gotta stop dreaming about that princess, man." Because Nesmith himself also plays the rôle of the princess, however, his comment could be rendered as "You gotta stop dreaming about that princess-man," where man is combined with princess instead of being a stand-alone vocative.
After Peter kicks the "mud" sign by the carriage, there's a phrase in the incidental music something like this:
Immediately after he overhears Harold telling Richard to torture and kill Princess Gwen, it appears again in a slightly different form:
Perhaps just coincidentally, the first measure of this incidental phrase is identical (in rhythm and pitch) to part of the melody for the line "One day, I'll be famous; I'll be proper and prim" in "Just You Wait" from My Fair Lady, something like this (I referenced Julie Andrews' version):
(There are also a number of references to My Fair Lady in the first season episode "The Chaperone," which I previously wrote about.)
About halfway through the episode, Harold says, "Who will save you, Gwen? The nobles hate you. The clergy hate you. The vassals hate you, and the serfs hate you." His comments exhibit epistrophe (repeating the same phrase at the end of successive clauses), and in this context, it provides a sense of the totality of the population's hatred of Gwen. Additionally, the subjects of these clauses almost line up with the hierarchy of The Three Estates (clergy first, nobles second, everyone else third), so the order here (roughly from top to bottom) also lends a sense of entirety.