The Lances of Lynwood

Though this was considered a classic in my grandparents' day, it is largely forgotten today. The tale is of brave knights and treacherous danger and was originally published in the 1850s. The writing for middle grade of that day is, of course, for the college educated of today, but I truly enjoyed it. The sentences and word choices bring an excellent mood to the story—
“Stand up, John, and let us know if you are in your senses,” said Gaston, angrily; “we have no time for fooleries.”
Or—
“At last, wearied out with the exertions of that day and the preceding, he listened to Eustace's persuasions, and, removing the more cumbrous portions of his armor, threw himself on his bed, and, in a moment, his regular breathings announced that he was sound asleep.”
(The woman can stuff commas into a sentence even better than I can.)

At any rate, in this delightsome tale we find most excellent and heroic knights, to whom death is to be had before dishonor, and gallantry above all. True heroes rather than weak antiheroes, despite the main knight being slight and bookish. The tale is set in roughly the period of 1370-1375.