Audrey Dudman
Audrey Dudman was Ace's mother. She was the daughter of Kathleen Dudman and Frank Dudman and was born during the Second World War. In 1943, the ship Frank was serving on was torpedoed and he was proclaimed missing, presumed dead.
Also in 1943, Audrey met Ace, her future daughter. Ace, initially not knowing the young Audrey was her mother, hated her name because of its connection to her mother, but came to love her, at least partially due to her friendship with Kathleen. Ace helped Audrey and Kathleen escape from the Haemovores and sent them to live with her other grandmother.
At around the age of 27, Audrey gave birth to Ace (whom she named Dorothy). Ace would grow to hate her mother, before meeting her in 1943. (DW: The Curse of Fenric)
It is not known if Audrey was at any point known by the names Audrey Gale or Audrey McShane (Ace's surnames).