Recomendations for fan of I Capture the Castle/Perilous Gard

[Rachael]

I'm looking for some sweet and romantic, but not trashy, historical fiction similar to "I Capture the Castle" by Dodie Smith, "The Perilous Gard" by Elizabeth Marie Pope, "Mara, Daughter of the Nile" by McGraw, or "Enchantment" by Orson Scott Card. Thanks for the help!