Miriam Flynn is an American actress and voice actress, who is best known for portraying Cousin Catherine in the National Lampoon's Vacation film series, and voicing Grandma Longneck in The Land Before Time franchise and the television series of the same name. She also had a recurring role as Sister Helen in the Fox/WB sitcom Grounded for Life. Additionally, she appeared in certain ABC shows, such as her own sitcom called Maggie, in which she played Maggie Weston.
For Disney, she voiced Gandra Dee in DuckTales. and Mrs. Roborson in Quack Pack. She also portrayed Dr. Berman in Desperate Housewives, Jane in Good Luck Charlie, Mrs. Smorlov in Zeke and Luther, Mrs. Snodgrass in Liv and Maddie, and Fay Clancy in Fancy Nancy.