If she was the only one there isn't clear. It is true that Stockard Channing was visiting him when he died.
John Spencer - actor - died on 2005-12-16.
Walter Channing - physician - died in 1876.
James C. Spencer died on 2009-12-25.
Simon Channing Williams died on April 11, 2009, in Cornwall, England, UK of cancer.
Spencer Summers died in 1976.
John Spencer Bassett died in 1928.
Spencer John Bent died on 1977-05-03.
John Strange Spencer-Churchill died in 1947.
John Spencer-Churchill - artist - died in 1992.
John Spencer - actor - died on 2005-12-16.
John Spencer - boat designer - died in 1996.
John Kemys Spencer-Churchill died on 1913-08-09.
John Spencer - snooker player - died on 2006-07-11.
John Roddam Spencer Stanhope died on 1908-08-02.
John Spencer-Churchill was 88 years old when he died on October 16, 2014 (birthdate: April 13, 1926).
Princess Diana was born Diana Spenser. Her father was John Spencer and her mother was Frances Shand Kydd. John Spencer died in 1992. Her mother died in 2004.
Edward Channing died in 1931.