Kathleen Cavendish, Marchioness of Hartington (b. 1920)
Kathleen Agnes Cavendish, Marchioness of Hartington (née Kennedy; February 20, 1920 – May 13, 1948), also known as "Kick" Kennedy, was an American socialite. She was the second daughter of Joseph P. Kennedy Sr. and Rose Kennedy as well as a sister of former U.S. President John F. Kennedy and Senators Robert F. Kennedy and Edward M. "Ted" Kennedy and the wife of the Marquess of Hartington, heir apparent to the 10th Duke of Devonshire.
When her father was serving as United States Ambassador to the United Kingdom, Kathleen made many friends in London and was the "debutante of 1938". Working with the Red Cross, she began a romantic relationship with Lord Hartington, whom she married in May 1944. He was killed on active service in Belgium only four months later. Kathleen died in a plane crash in 1948, flying to the south of France while on vacation with her new partner, the 8th Earl Fitzwilliam.

1948May, 13
Kathleen Cavendish, Marchioness of Hartington
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Events on 1948
- 3Apr
Marshall Plan
United States President Harry S. Truman signs the Marshall Plan, authorizing $5 billion in aid for 16 countries. - 14May
1948 Arab-Israeli War
Israel is declared to be an independent state and a provisional government is established. Immediately after the declaration, Israel is attacked by the neighboring Arab states, triggering the 1948 Arab-Israeli War. - 15May
1948 Arab-Israeli War
Following the expiration of The British Mandate for Palestine, the Kingdom of Egypt, Transjordan, Lebanon, Syria, Iraq and Saudi Arabia invade Israel thus starting the 1948 Arab-Israeli War. - 16Jul
1948 Arab-Israeli War
Following token resistance, the city of Nazareth, revered by Christians as the hometown of Jesus, capitulates to Israeli troops during Operation Dekel in the 1948 Arab-Israeli War. - 3Aug
Alger Hiss
Whittaker Chambers accuses Alger Hiss of being a communist and a spy for the Soviet Union.