In the 17th volume of The Chesterton Review, Sara Dudley Edwards, reviewing C. S. Lewis' Narnia stories, calls Lewis' "attempt at courtly language" clumsy.
[...] In all these instances, a large part of the problem is Lewis's attempt at courtly language. This is at its clumsiest in the white stag episode at the end of The Lion, the Witch, and the Wardrobe, but it afflicts all three Narnian princes also, particularly Rilian ("Damsel, you are of a high courage").
Being unschooled in such lingo, I naturally assumed that Lewis knew what he was doing, but now I'm not sure. What did authentic "courtly language" really sound like? What is wrong with "Damsel, you are of a high courage", for instance?