In 1959, her husband was knighted and she formally became Lady Redgrave. However, she refused to use her title professionally. In 2003, four days before what would have been her 93rd birthday, she died of a stroke at the home of her granddaughter, Natasha Richardson, in Millbrook, New York. Richardson died on 18 March 2009 in a skiing accident and was buried near Kempson. Kempson's youngest daughter, Lynn Redgrave was also buried in the same cemetery on 8 May 2010, near Kempson and Richardson.