Mary Elizabeth McDonough

Mary Elizabeth McDonough
McDonough at The Waltons 40th Anniversary in September 2012
Born
Los Angeles, California
Occupation(s)Actress, writer
Years active1963–present
Spouses
Rob Wickstrom
(m. 1988⁠–⁠1996)
Don Couch
(m. 2011)

Mary Elizabeth McDonough, sometimes credited as Mary Beth McDonough, is an American actress and writer, best known for her role as Erin Walton on The Waltons on the Columbia Broadcasting System (CBS-TV network from 1972 to 1981, and several subsequent made-for-television reunion films in later decades.