Princes in the Tower of 14; both had predeceased the King. However, two lead coffins clearly labelled as George Plantagenet and Mary Plantagenet were subsequently discovered elsewhere in the Chapel (during the excavation for the royal tomb house for King George III under the Wolsey tomb-house in 1810–13), and were moved into the adjoining vault of Edward IV's, but at the time no effort was made to identify the two lead coffins already in Edward IV's vault. In the late 1990s, work was being carried out near and around Edward IV's tomb in St George's Chapel; the floor area was excavated to replace an
Princes in the Tower knew that this story was false, and so Henry had to have her silenced. Markham suggests this was the motivation behind Henry's decision, in February 1487, to confiscate all of Elizabeth's lands and possessions, and have her confined to Bermondsey Nunnery, "where she died six years afterwards". However, Arlene Okerlund suggests that her retirement to the nunnery was her own decision, whilst Michael Bennett and Timothy Elston suggests the move was precautionary, precipitated by Lambert Simnel's claim to be her son Richard. Pollard calls Markham's theory "highly speculative", and states that Henry's silence over the princes was more likely "political