I think I would have been more surprised by some of the plot if the names hadn't been so obvious.
The Myr = Merlin thing was, well, probably obvious to most people. Even without knowing the name Myrddin. which I did not know until now
Then you have Boadicea, the queen attacked by Bomans, being named after Boudica/Boadicea, the queen defeated by Romans.
And Mordred, the traitor aspiring knight of Merlin's Faithful, being named after Mordred, the traitor knight of the Round Table.
Not that I haven't been enjoying the story. It's great! Jill hit me pretty hard.
It's just that, when I first saw Mordred, I was thinking "hmm, I wonder who's going to end up being secretly evil"
to be fair though, I only know of Boudica and Mordred because I play FGO