I didn’t know much about Greta Garbo until I came across an article on her. She was originally born in Stockholm to a a poor family. Her family was so poor, that she was basically adopted out to a benefactor.
Garbo was discovered by Swedish director Mauritz Stiller at 19 years of age. She then headed out for New York, then to Hollywood and went on to star in 24 films.
Then, just as quickly as she began, she quit the business. At the age of 36, no one saw another film with her in it. She never discussed why she left the business, and continued to live a relatively unknown life until her death.