The Immortal Knight Chronicles11 books in series
Vampire Crusader Publisher's Summary
The immortal knight, Sir Richard of Ashbury, hunts his nemesis through centuries of war....
AD 1190, England. A young knight's family is slaughtered. As the lords of Europe seek to retake Jerusalem from the mighty Saladin, Sir Richard swears an oath of vengeance against Earl William de Ferrers, who has returned from the dead with an insatiable thirst for violence.
Richard stalks William and his savage knights across Europe to the Holy Land, fights in the crusades' bloodiest battles alongside Richard the Lionheart and unearths a secret of great evil under the hills of Palestine.