'Swan Song: Diana, My Sister,' a memoir by Charles Spencer, brother of the late Princess Diana, went on sale in bookstores. Spencer claims Charles was 'giddily elated' in the aftermath of Diana's death in 1997. Michael Holden has more ▻ ↧ What Princess Diana's brother Charles Spencer says in new book Charles Spencer's memoir "Swan Song: Diana, My Sister" published on Tuesday, nearly 30 years after Princess Diana's death, contains a series of allegations about his sister's former marriage to Britain's King Charles and the aftermath of her death.