Margaret Sullavan

Margaret Brooke Sullavan was an American actress of stage and film and singer.

Sullavan was born in Norfolk, Virginia, the daughter of a wealthy stockbroker, Cornelius Sullavan, and his wife, Garland Brooke. The first years of her childhood were spent isolated from other children. She suffered from a painful muscular weakness in the legs that prevented her from walking, so that she was unable to socialize with other children until the age of six. After her recovery she emerged as an adventurous and tomboyish child who preferred playing with the children from the poorer neighborhood, much to the disapproval of her classconscious parents.

Source: Wikipedia