She often stole the show with her blue-bloods and usually played older than she was. She appeared as Cary Grant's mother in North by Northwest (1959), despite the fact she was only seven years older than Grant. She also played Grace Kelly's mother in The Swan (1956).
She played Grace Kelly's Mother twice. Once in The Swan and again in To Catch a Thief.
Biography in Actresses of a Certain Character: Forty Familiar Hollywood Faces from the Thirties to the Fifties by Axel Nissen.
Her son, Medbury Perry Landis, was born with Down syndrome in 1916 and died in 1928.