Sybil Hawthorne was born to a family of modest means, with her parents encouraging her early interest in the performing arts. She began her career on the stage, performing in various theatrical productions in London and later in New York City. Her early start in the entertainment industry was marked by a series of small roles and chorus performances, but it wasn't long before her talent and charisma caught the attention of prominent producers.

Sybil Hawthorne's breakthrough role came in 1922 with the film "The Glorious Torpedo," a romantic comedy-drama that catapulted her to stardom. Her performance earned her critical acclaim, and she soon became a sought-after leading lady in Hollywood. Throughout the 1920s and 1930s, Hawthorne appeared in a string of successful films, often paired with popular leading men of the time, including Rudolph Valentino and Clark Gable.

In 1914, Hawthorne made her film debut in the silent movie era, appearing in a series of short films and feature-length productions. Her early film roles were often typecast in the "ingenue" or "siren" mold, showcasing her beauty and charm on screen. As the film industry grew and evolved, Hawthorne adapted to the changing landscape, transitioning seamlessly from silent films to "talkies" in the late 1920s.

Despite her professional success, Sybil Hawthorne's personal life was marked by turmoil and scandal. Her marriage to actor and director, Cecil Hawthorne, was troubled from the start, with reports of infidelity and domestic disputes making headlines in the tabloids. The couple eventually divorced in 1935, but not before Hawthorne's reputation was tarnished by rumors of a high-profile affair with a prominent studio executive.

In addition to her marital woes, Hawthorne struggled with addiction and health issues throughout her life. Her struggles with substance abuse were well-documented, with friends and colleagues expressing concern about her increasingly erratic behavior. Despite these challenges, Hawthorne continued to work tirelessly, often relying on her talent and professionalism to carry her through difficult times.