Una O'Connor is one of my favorite character actors from the Golden Age of Hollywood. She had memorable supporting parts in many of the greatest classics of her time. If you can't place the name, I'm sure seeing her will help. (list image: Bride of Frankenstein)
Writing in "The Stage" in 1959, Eric Johns described her thus: "... a frail little woman, with enormous eyes that reminded one of a hunted animal. She could move one to tears with the greatest of ease, and just as easily reduce an audience to helpless laughter in comedies of situation. She was mistress of the art of making bricks without straw. She could take a very small part, but out of the paltry lines at her disposal, create a real flesh-and-blood creature, with a complete and credible life of its own."