Villien's relationship with his father is tenuous at best. Mostly, Lachlan blames Villien for anything and everything and uses whatever he can to discredit the boy.
Villien is blamed for:
His mother's death as she died in child birth.
His father's late devolpment of his personal ability as a healer. This is because he was too late to save Athura from dying.
Lachlan also uses Villien's deformity of being able to see in colour as a means to bully his son. He likes to hit him in the head to see if it makes him more normal.