The First Vampire (Prequel to the Venefica series)
Liluri, wife of King Manuzi, was in love. She loved a servant of the castle, Thaddeus. After the birth of her twin daughters, Liluri is caught committing adultery, by none other than her husband, King Manuzi. The babies were not his, and now Liluri is doomed to die. Liluri wants to make sure that her daughter's will be safe when she is gone, So she turns Thaddeus into the first vampire.