Edward died at the age of 15 at Greenwich Palace at 8 pm on 6 July 1553. According to John Foxe's legendary account of his death, his last words were: "I am faint; Lord have mercy upon me, and take my spirit". He was buried in the Henry VII Lady Chapel at Westminster Abbey on 8 August 1553, with reformed rites performed by Thomas Cranmer. The procession was led by "a grett company of chylderyn in ther surples" and watched by Londoners "wepyng and lamenting"; the funeral chariot, draped in cloth of gold, was topped by an effigy of Edward, with crown, sceptre, and garter. Edward's burial place was unmarked until as late as 1966, when an inscribed stone was laid in the chapel floor by Christ's Hospital school to commemorate their founder. The inscription reads as follows: "In Memory Of King Edward VI Buried In This Chapel This Stone Was Placed Here By Christ's Hospital In Thanksgiving For Their Founder 7 October 1966". The cause of Edward VI's death is not certain. As with many royal deaths in the 16th century, rumours of poisoning abounded, but no evidence has been found to support these. The Duke of Northumberland, whose unpopularity was underlined by the events that followed Edward's death, was widely believed to have ordered the imagined poisoning. Another theory held that Edward had been poisoned by Catholics seeking to bring Mary to the throne. The surgeon who opened Edward's chest after his death found that "the disease whereof his majesty died was the disease of the lungs". The Venetian ambassador reported that Edward had died of consumption—in other words, tuberculosis—a diagnosis accepted by many historians. Skidmore believes that Edward contracted tuberculosis after a bout of measles and smallpox in 1552 that suppressed his natural immunity to the disease. Loach suggests instead that his symptoms were typical of acute bronchopneumonia, leading to a "suppurating pulmonary infection" or lung abscess, septicaemia, and kidney failure. Lady Mary was last seen by Edward in February, and was kept informed about the state of her half-brother's health by Northumberland and through her contacts with the imperial ambassadors. Aware of Edward's imminent death, she left Hunsdon House, near London, and sped to her estates around Kenninghall in Norfolk, where she could count on the support of her tenants. Northumberland sent ships to the Norfolk coast to prevent her escape or the arrival of reinforcements from the continent.