Sponsored Links Mary Elizabeth McDonough dating Whom? Mary Elizabeth McDonough is currently single Mary Elizabeth McDonough Complete Dating History Add new Post Sponsored Links Mary Elizabeth McDonough wiki Login to Edit Bio: American actress who played the role of Erin Walton in the television series The Waltons from 1971 until 1981. She had one of her first roles in the soap opera General Hospital in 1963.Date of Birth: 04 May, 1961Zodiac Sign: TaurusPlace of Birth: Los Angeles, California, United StatesAge: 63 years oldProfession: TV actress Show more bio data > Mary Elizabeth McDonough Latest Videos