In December 1937, Joseph Kennedy, father of the future President, John F. Kennedy, was appointed U.S. Ambassador to Great Britain. It was among the most prestigious of all the diplomatic posts—one he had lobbied for over many months. When he and his large, rambunctious family arrived in London in March 1938, English society welcomed them with open arms.

In London, the American Ambassador and his wife soared to the heights of British society. In the spring of 1938, just before war would cast its shadow across Europe, the couple luxuriated in the warmth of English hospitality, hobnobbing with aristocrats and royalty at the many balls, dinners, regattas, and derbies of the season. The highlight was surely the April weekend that they spent at Windsor Castle, guests of King George VI and his wife, Queen Elizabeth. In great detail, Rose Kennedy chronicled those unforgettable days in her diary.