Born Leona Elaine Winona DeVinna in Pocatello, Idaho, to Edgar DeVinna, a former superintendent at a Native American reservation, and his wife Lorena, brunette B-movie starlet Kay Morley was one of five siblings.
As she recounts, her discovery was facilitated by a talent scout while visiting a friend in Hollywood, which led to her adoption of the stage name Kay Morley and subsequent entry into the entertainment industry.
Initially, Morley began her career as a Goldwyn Girl, before making her notable debut in Youth Aflame (1944),a teenage delinquency drama produced by low-budget studio Jay-Dee-Kay Productions, specializing in exploitation films.
Throughout her film career, Morley alternated between playing western leading ladies, capitalizing on her equestrian skills, opposite notable actors such as Johnny Mack Brown and Jimmy Wakely, and appearing in a few lighthearted musical comedies.
As the 1950s progressed, Morley transitioned into television, gradually winding down her screen presence by the middle of the decade.
In the latter part of her life, Morley pursued a career in the fashion industry, serving as a manager at Bullock's department store in Palm Springs.