Start with high-confidence medieval tales books, then narrow by subgenre or adjacent topics.
Warrior Scarlet
Rosemary Sutcliff, Charles Keeping
The King's Shadow
Elizabeth Alder
The Squire's Quest
Gerald Morris
The Perilous Gard
Richard J. Cuffari, Elizabeth Marie Pope
A Knight of the Seven Kingdoms
George R. R. Martin, Gary Gianni
The Hedge Knight
George R. R. Martin, Ben Avery
Sir Bentley and Holbrook Court
Chuck Black
The Little Duke
Charlotte Mary Yonge
The Red Keep
Allen French, Andrew Wyeth
