Met, married, and divorced Gary "Cotton" Adamson while he was a prison inmate convicted of murder.
She had a daughter by former football player husband Roland Harrison named Nona Merrill Harrison who was born on May 20, 1972 in Los Angeles. She graduated from Palisades High School in Pacific Palisades, California with the Class of 1990.
She retired from acting after her marriage to Richard Rudman.
As a child modeled for JC Penney catalogs.
Attended L.A. City College, while working in a men's clothing store.
She and her mother were in a bad car accident on the Pacific Coast Highway. She suffered head, neck and back injuries, leaving her in and out of a wheelchair for two years.
Was friends with Michelle Phillips at one time and the two of them checked out a copy of the novel "Lolita" at the library, knowing it had been banned. Sue later stated that she couldn't finish the book because it was too complex for her, as she was only 12 at the time.
Was diagnosed as a manic-depressive and was prescribed lithium. She later said she had struggled on and off with this since she was 16.
Warren Beatty was about to cast her as Bonnie Parker in his film Bonnie and Clyde (1967) when he decided, at the last minute, to cast Faye Dunaway instead.
At the end of the shoot, Shelley Winters, her Lolita (1962) co-star, gave Sue Lyon two pink Persian kittens, which were originally Elizabeth Taylor's.
Was chosen in 1960 as Miss Smile by LA County dentists.
In August 1971, she adopted a 14-year-old boy. He was named Robert Lyon Harrison.