From Wikipedia

Kay Kendall (21 May 1927 – 6 September 1959) was an English actress.

Kendall began her film career in the musical film London Town (1946). Though the film was a financial failure, Kendall continued to work regularly until her appearance in the comedy film Genevieve (1953) brought her widespread recognition. Most prolific in British films, Kendall also achieved some popularity with American audiences, and won a Golden Globe Award for Best Actress – Motion Picture Musical or Comedy for her role in the musical-comedy film Les Girls (1957). She began a romantic relationship with actor Rex Harrison after they appeared together in the comedy film The Constant Husband (1955), and they were married in 1957. Harrison learned from Kendall's doctor that she had been diagnosed with myeloid leukaemia, a fact that was kept from Kendall, who believed she was suffering from an iron deficiency. The actor cared for Kendall until her death at age 32.