Nanny Clontarf was an ancient vampire, and nanny of Count Dracula and his brother Ivan Dracula. She was portrayed as being the Count's Grand High Vampire when he entered the dreamworld and Ivan is said to have run to her when the Count took his toy hearse away. She never appears and is only mentioned by the Count in the episodes "The Yanks Are Coming", "Insomnia" and "The Enemy Within".
It was implied the Count killed her by throwing her into a garlic pit.