Washington DC, April 1 -- Sian Barbara Allen, a Golden Globe-nominated TV actress who appeared in hits such as The Waltons and L.A. Law, passed away at the age of 78 on Monday at Chapel Hill in North Carolina, reported Deadline.

According to the outlet, the actress died due to Alzheimer's Disease.

Actress Barbara Allen's breakthrough role came with the horror drama film 'You'll Like My Mother' which featured Patty Duke, Rosemary Murphy and Richard Thomas. It earned her the Golden Globe nomination for most promising new actress in 1973.

She followed that up with an appearance in the Bette Davis thriller 'Scream, Pretty Peggy'. Her other roles include the 'Billy Two Hats' opposite Gregory Peck and Jack Warden and 'The Lindbergh Kidnappin...