Walter Brooke appeared in a slew of movies and TV shows, starting in 1941, but his most memorable scene is in The Graduate when he tells Dustin Hoffman "One word...plastics!"
Robert Bray signed on as a contract player at RKO in 1946, and was billed as the "next Gary Cooper." But that never panned out. He appeared in B movies and TV shows, and is best known as forest ranger Corie Stuart on Lassie.
Frank D. Gilroy was a playwright who wrote the highly acclaimed play The Subject was Roses. He went into screenwriting, adapting his play The Subject was Roses, as well as writing Texas John Slaughter, Gunfight at Sandoval, The Only Game in Town, and co-writing The Fastest Gun Alive and The Gallant Hours, as well as episodes of several TV shows. He was also a producer and Director (From Noon till Three and Desperate Characters), and creator of the TV series Burke's Law.
For historical reference, British actress Lillie Langtry (1853-1929) was so admired by Judge Roy Bean that he renamed Eagle's Nest, Texas to Langtry, and named his saloon The Jersey Lily, Langtry's nickname.
Irene Rich (1891-1988) started in silent films, and appeared in 113 movies from 1918-1949. She played Gail Russell's mother in Angel and the Bad Man, and Mrs' O'Rourke in Fort Apache.