Kathleen (Kennedy) Cavendish

Kathleen Agnes (Kennedy) Cavendish (1920 - 1948)

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Kathleen Agnes "Kick" Cavendish formerly Kennedy
Born in Brookline, Massachusetts, USAmap
Ancestors ancestors
Wife of — married in London, Englandmap
Died in Plane crash in Francemap
Profile last modified | Created 26 May 2011
This page has been accessed 2,457 times.

Categories: Siblings of US Presidents.

British Aristocracy
Kathleen (Kennedy) Cavendish was a member of aristocracy in the British Isles.
Join: British Royals and Aristocrats Project
Discuss: british_aristo



Kathleen Agnes Cavendish, Marchioness of Hartington was an American socialite. She was the fourth child and second daughter of Joseph P. Kennedy, Sr. and Rose Fitzgerald.

Born: February 20, 1920, Brookline, MA
Died: May 13, 1948, Saint-Bauzile, Ardèche, France
Spouse: Billy Cavendish, Marquess of Hartington (m. 1944–1944)
Buried: St Peter's Church, Edensor, United Kingdom
Siblings: John F. Kennedy, Robert F. Kennedy, Ted Kennedy, More
Parents: Rose Fitzgerald, Joseph P. Kennedy, Sr.

Kathleen was Marchioness Of Hartington, [1]


when Kathleen came to London with her father, she met a wealthy, titled aristocrat. He was William Cavendish, the Marquess of Hartington — the powerful 10th Duke of Devonshire's son and heir not only to the title, but to the palatial Chatsworth House estate, among other rich properties. He was such a catch that the British royal family apparently had their eye on him for their own Princess Elizabeth, the future queen.

Kathleen, nicknamed "Kick," married Billy, as he was called, when she was 24, on May 6, 1944. A World War II romance, they were very much in love-despite their different faiths, which raised great conflict within their families: His family, for hundreds of generations, was very much Church of England, and hers was devout Roman Catholic. In fact, Rose Kennedy noted that she was "disturbed, horrified, heartbroken" that her daughter Kathleen had married a Protestant — and in a civil ceremony at that (Kathleen's brother, Joseph, was the only family member to attend). Rose didn't have contact with her for nearly two months after the wedding.


Cause of death: Kathleen was killed in a plane crash caused by a violent storm, while flying from Paris to the French Riviera in a small private plane with her married English boyfriend, the 8th Earl Fitzwilliam.
In Loving Memory of KATHLEEN (1920 - 1948)
Widow of Major The Marquess of Hartington Killed in Action & Daughter of The Hon. Joseph Kennedy Sometime Ambassador of the United States to Great Britain. Joy She Gave Joy She Has Found.
FindAGrave: Kathleen Kennedy: Memorial ID:3491


Today, visitors can see the tiny Protestant churchyard in the charming village where Kathleen is buried in the Cavendish family plot, with a plaque by her gravestone noting the June 1963 visit of JFK just months before his own death. And, about a mile away, is Chatsworth House, the gorgeous 297-room estate where, prior to her marriage, Kathleen had celebrated her 24th birthday. [2]



  1. Entered by Gilly Wood, Sunday, September 8, 2013.
  2. Creators.com: The Unknown Kennedy and England's Chatsworth House

Source: Burke's Presidential Families.
Montgomery-Massingberd, Hugh. Burke's Presidential Families of the United States of America. London: Burke's Peerage, 1981. Print.

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No known carriers of Kathleen's ancestors' mitochondrial DNA have taken an mtDNA test and no close relatives have taken a 23andMe, AncestryDNA, or Family Tree DNA "Family Finder" test.

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Images: 4
Kathleen Kennedy
Kathleen Kennedy

Kathleen Kennedy
Kathleen Kennedy

Kathleen Kennedy Death Notice
Kathleen Kennedy Death Notice

The Kennedy Children
The Kennedy Children


On 3 Nov 2013 at 16:29 GMT Maggie N. wrote:

Can you please put me on the trusted list for all your Kennedy ones. We would like to clean up President John's family in time for his memorial on November 22 2013 !

Thanks for the help ! Maggie US Presidents Project

On 11 Oct 2013 at 15:16 GMT Michelle (Gerard) Hartley wrote:

Arborist message pending merge

Kathleen is 29 degrees from Rosa Parks, 18 degrees from Anne Tichborne and 10 degrees from Victoria of the United Kingdom of Great Britain and Ireland on our single family tree. Login to find your connection.

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