Judith McGrath (21 April 1947 – 20 October 2017) was an Australian actress. McGrath was known for her television roles, including soap opera's Prisoner (1979–84), as Deputy Governor/Officer Colleen "Poface" Powell, A Country Practice (1992–93) as hippy Bernice Hudson and for her Logie Award-nominated role in the medical drama All Saints as Nurse Yvonne "Von" Ryan (1998–2009) and her comedy roles in children's series Round the Twist as Matron Cecilia MGribble. McGrath was known for playing characters with a dry, often sarcastic wit