Cary was born on October 29, 1918, in San Diego, California,as Peggy-Jean Montgomery, the second daughter of Marian (née Baxter) and Jack Montgomery. While some sources incorrectly give her birth name as Margaret, Cary herself, in her autobiography, notes that she was indeed born as Peggy-Jean.
Baby Peggy was "discovered" at the age of 19 months, when she visited Century Studios on Sunset Boulevard in Hollywood with her mother and a film-extra friend.
The success of the Baby Peggy films brought her into prominence. When she was not filming, she embarked on extensive "In-Person" personal appearance tours across the country to promote her movies. She was also featured in several short skits on major stages in Los Angeles and New York, includinCary was born on October 29, 1918, in San Diego, California,as Peggy-Jean Montgomery, the second daughter of Marian (née Baxter) and Jack Montgomery. While some sources incorrectly give her birth name as Margaret, Cary herself, in her autobiography, notes that she was indeed born as Peggy-Jean.
Baby Peggy was "discovered" at the age of 19 months, when she visited Century Studios on Sunset Boulevard in Hollywood with her mother and a film-extra friend.
The success of the Baby Peggy films brought her into prominence. When she was not filming, she embarked on extensive "In-Person" personal appearance tours across the country to promote her movies. She was also featured in several short skits on major stages in Los Angeles and New York, including Grauman's Million Dollar Theatre and the Hippodrome. Her likeness appeared on magazine covers and was used in advertisements for various businesses and charitable campaigns. She was also named the Official Mascot of the 1924 Democratic Convention in New York, and stood onstage waving a United States flag next to Franklin Delano Roosevelt.
While under contract with Century and Universal, Peggy commanded an impressive salary, but her parents didn't set aside any money for the future well being of Peggy or her sister, Louise. Through reckless spending of her parents, and corrupt business partners of her father, her entire fortune was gone before she hit puberty.
In her post acting years, Peggy married Gordon Ayres in 1938 and a few years later adopted the name Diana Ayres in an effort to distance herself from the Baby Peggy image. Working at the time as a writer for radio shows, she found that people who figured out her identity were more interested in her Baby Peggy persona than in her writing abilities. She later changed her name to Diana Serra Cary explaining, "After my divorce [from Gordon Ayres] and when I became a Catholic I took Serra as my confirmation name. When I married Bob [her second husband] I became Mrs. Cary."
Eventually, after years of emotional struggle and open derision from Hollywood insiders and the media,] Cary made peace with her Baby Peggy past. She had successful careers as a publisher, historian and author on Hollywood subjects, writing, among other works, an autobiography of her life as a child star, What Ever Happened to Baby Peggy: The Autobiography of Hollywood's Pioneer Child Star, and a biography of her contemporary and rival, Jackie Coogan: The World's Boy King: A Biography of Hollywood's Legendary Child Star.
As an adult, Cary worked on numerous books about the early film industry, Hollywood cowboys and harsh working conditions for child stars in Hollywood. At the end of her own autobiography, she recounts the fates of numerous child stars, including Judy Garland and Shirley Temple. She also advocated for reforms in child performer protection laws as a member of the organization A Minor Consideration.
Cary appeared in numerous television documentaries and interviews about her work, and she made guest appearances at silent film festivals. At the age of 99, Cary self-published her first novel, The Drowning of the Moon.
Cary & her second husband had one son, Mark. They remained married until Cary's death in 2001. She lived in Gustine, California, near Modesto for many years.
Cary died at her home in Gustine on February 24, 2020, at the age of 101.