<Table> <Tr> <Td> </Td> <Td> This section of a biography of a living person needs additional citations for verification . Please help by adding reliable sources . Contentious material about living persons that is unsourced or poorly sourced must be removed immediately, especially if potentially libelous or harmful . (November 2016) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This section of a biography of a living person needs additional citations for verification . Please help by adding reliable sources . Contentious material about living persons that is unsourced or poorly sourced must be removed immediately, especially if potentially libelous or harmful . (November 2016) (Learn how and when to remove this template message) </Td> </Tr> <P> Arngrim's father, Thor Arngrim, was a Canadian - born Hollywood manager . Her mother, Norma MacMillan of Vancouver, British Columbia, was an actress who provided the voices for characters as Casper on Casper the Friendly Ghost, as Gumby on Gumby, as Davey on Davey and Goliath, and Sweet Polly Purebred on Underdog, as well as other animated children's programs . </P> <P> Her brother, Stefan (b . 1955) was also a child actor, perhaps best known for his role as Barry Lockridge on the Irwin Allen science fiction television series, Land of the Giants . Arngrim has claimed that her brother sexually molested her from age six until nine . </P>

Who played nellie on little house on the prairie