Mary Lee Robb Cline (15 February 1926 – 28 August 2006) was a radio actress during the 1940s and 1950s.As Mary Lee Robb, she's best known for playing Marjorie, Gildersleeve's niece, on The Great Gildersleeve. A small role in a 1948 episode of that program led to the full-time role of Marjorie, which she played until 1954.Robb made her radio debut in 1947 on the Lum and Abner program. She also appeared on The Penny Singleton Radio Show.Robb was born in Streator, Illinois. Her father, Alex S.