Start with high-confidence ancient-world romance books, then narrow by subgenre or adjacent topics.
Hadrian's Wall
William Dietrich
The Song of Achilles
Madeline Miller
I Am Cleopatra
Natasha Solomons
Daughters of Rome
Kate Quinn
Shadows on the Aegean
Suzanne Frank
Two From Galilee
Marjorie Holmes
Shelter of the Most High
Connilyn Cossette, Rachel Botchan
Like Flames in the Night
A Voice in the Wind
Francine Rivers
The Wolf Den
Elodie Harper
Land of Silence
Tessa Afshar
Jewel of the Nile
Before the King
Heather Kaufman
Quo Vadis
Henryk Sienkiewicz
