Sian Barbara Allen, who appeared in several TV series and TV movies through the early 1970s to late '90s, has died. The Golden Globe nominee died Monday at age 78, her family announced.

Actress Sian Barbara Allen, who played the lead role in “Scream, Pretty Peggy” and was John-Boy’s love interest in two episodes of “The Waltons” during the 1970s, died March 31. She was 78.

Sian Barbara Allen, the beloved star of The Waltons, has died. She was 78. The actress died of Alzheimer's in Chapel Hill, N.C., on Monday, March 31, an online obituary announced.

Sian Barbara Allen, an actress best known for her work on The Waltons, has died. She was 78. Allen’s death was announced in her online obituary, which shared that she died of Alzheimer’s in ...

Sian Barbara Allen, who appeared in several TV series and TV movies through the early 1970s to late ’90s, has died. The Golden Globe nominee died Monday at age 78, her family announced.

Actress Sian Barbara Allen, who played the lead role in “Scream, Pretty Peggy” and was John-Boy’s love interest in two episodes of “The Waltons” during the 1970s, died March 31. She was 78.

Sian Barbara Allen, who appeared in several TV series and TV movies through the early 1970s to late '90s, has died. The Golden Globe nominee died Monday at age 78, her family announced.