Known to legions of fans as Erin from the 70s TV series The Waltons, Mary McDonough took on the memorable role in 1971, when she was 11 years old. It was her first major acting gig, and she would remain with the series until it ended its run in 1981, though McDonough would reprise the role for subsequent Waltons TV movies, like 1982's A Wedding on Walton's Mountain.
The following decades would find McDonough acting in a variety of projects, making several guest appearances on TV shows like Picket Fences and The Division. In 2006, the actress returned to her roots with another recurring TV role, playing Mrs. Wilhoite on the sitcom The New Adventures of Old Christine.
| Title | Year | Editors' Rating | User Rating | |
|---|---|---|---|---|
|
The Bradys Go Bowling
Participant |
2011 | |||
| 2003 | ||||
| 1999 | ||||
|
A Walton Easter
Actor |
1997 | |||
|
ER: Random Acts
Actor |
1997 | |||
|
Heaven Sent
Actor |
1995 | |||
| 1989 | ||||
|
Mom
Actor |
1989 | |||
|
Funland
Actor |
1987 | |||
|
Impure Thoughts
Actor |
1986 | |||
|
Snowballing
Actor |
1984 | |||
|
Nightmares
Actor |
1983 | |||
| 1982 | ||||
| 1982 | ||||
|
Lovely... But Deadly
Actor |
1982 | |||
| 1982 | ||||
|
Midnight Offerings
Actor |
1981 | |||
|
Mortuary
Actor |
1981 | |||
|
The Other Victim
Actor |
1981 | |||
|
The Waltons: Season 09
Actor |
1980 | |||
|
The Waltons: Season 08
Actor |
1979 | |||
|
The Waltons: Season 07
Actor |
1978 | |||
|
The Waltons: Season 06
Actor |
1977 | |||
| 1977 | ||||
|
The Waltons: Season 05
Actor |
1976 | |||
|
The Waltons: Season 04
Actor |
1975 | |||
|
The Waltons: Season 03
Actor |
1974 | |||
|
The Waltons: Season 02
Actor |
1973 | |||
|
The Waltons: Season 01
Actor |
1972 | |||
|
The Homecoming
Actor |
1971 |


