I loved these historic fiction novels in high school called "The Young Royals" by Carolyn Meyer which focused on the four most important women of the Tudor family: Mary Tudor, her sister Elizabeth Tudor, Anne Boleyn (second wife of Henry the VIII), and Catherine of Aragon (first wife of Henry the VIII).
Carolyn Meyer did similar novels that focused on other princesses and queens like Marie Antoinette and Mary, Queen of Scotts but I only read the first four about the Tudors and thought they were intriguing. My favorite was the book about Anne Boleyn. I actually felt sympathy for her. 