When McClintic was in London, he was able to secure Brian Aherne to play the part of Robert Browning. Afterwards, McClintic immediately went to a London jewelry store and bought a necklace, two bracelets and a garnet ring, all at least 100 years old. For every single performance that Cornell gave as Elizabeth Barrett, she wore this jewelry in the last act, when she leaves the family home for the last time. Katharine Hepburn was selected for the part of Henrietta, but since she was going to play in a summer stock company a few months later, she could not be signed to a contract. Casting the dog was troublesome because it had to lie still in its basket on stage for a great length of time, and then exit when called. McClintic selected an eight-month-old cocker spaniel, which played the role for the full run and many others afterward, to tremendous applause.