He has a Throne of Blood
Book one in the Valmont the Vampire Prince Trilogy.
Valmont is a boy when sees his mother killed by people in this village. As an orphan he grows up with the help of Mrs. Dora and her daughter, Aphrodite.
Valmont is grateful to them, and his life will have more meaning after the discovery of his first love.
As the years pass by, he starts dreaming of blood, a strange man, and a throne of blood.
He doesn't know he is a prince. Not just any prince but a vampire prince.