Stardust of Yesterday (de Piaget #9) by Lynn Kurland
This is the tale of the young man who had inherited the castle. There was the ghost who had tried to scare her away. Kendrick de Piaget was not the typical ghost. He was the handsome as well as the arrogant thirteenth century Knight. In the starting, he wanted to scare the Genevieve. She is more charmed and fed up with the ghostly tricks. But all of his thoughts were turned.
Published April 1st, 2001 by Berkley Publishing (first published April 1996)