Nellie Olesen was played by Alison Arngrim. I don't know what you mean by the original. Nellie was never replaced in the series. After she married Percival Dalton, they had twins they moved to New York to take over Percival's fathers company after he became sick. After the move, Nellie and Percival didn't come back into the series until the 9th season. Nellie's parents adopted a child named Nancy who acted just like Nellie.
Alison Arngrim played the original Nellie Oleson in the TV series "Little House on the Prairie." She portrayed the character throughout the show's run from 1974 to 1983.
Eric Olsen plays for the Tennessee Titans.
Dylan Olsen plays for the Florida Panthers.
Dylan Olsen plays defense for the Florida Panthers.
Mary-Kate Olsen plays Kendra in Beastly.
Greg Olsen plays Tight End for the Carolina Panthers.
The person who plays Vanessa is Olivia Olsen
Olivia Olsen plays Vanessa Doofenshmirtz
Olivia Olsen
Nellie Oleson in the "Little House on the Prairie" series was based on three different individuals from Laura Ingalls Wilder's childhood: Nellie Owens, Genevieve Masters, and Stella Gilbert. Each of these girls exhibited similar characteristics to the Nellie Oleson character in the books.
Olivia Olsen plays Vanessa Doofenshmirts
Sam Huntington plays Jimmy Olsen. He's recently been staring in the TV show "Being Human"
She plays Dee on its always sunny in philadelphia