Certain procedure

Baron Byron can control his thirst for blood around humans due to his mother, Lady Cordelia under going a certain procedure at the bidding of the Sacred Ancestor while Byron was still in the womb. Though his mother was opposed to the procedure, his father, was most insistent, and the procedure was preformed. As a result, he now has an artificial hand. After is birth, the Sacred Ancestor took him for three months. There are some who say Lord Vlad was not the father, but rather the Sacred Ancestor. The sperm the Sacred Ancestor collected from Fisher Lagoon might've also been used.