She was named Mary by her father , Arkham .
Mary renounced the name when father murdered Mary 's mother in a ritual to obtain demonic power , an act which drove Mary to psychosis and obsessive vengeance .
She was named Mary by her father , Arkham , but she renounced the name when he murdered her mother in a ritual to obtain demonic power , an act which drove Mary to psychosis and obsessive vengeance .