 However, Arlene Okerlund suggests that her retirement to the abbey 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 calculation than personal guilt".Henry was also never accused of the murder by any contemporary, not even by his enemies, which he likely would have been had contemporaries thought there was any possibility of his guilt.