Anne, who had many enemies at court, had never been popular with the people and had so far failed to produce a male heir. The King was growing impatient, having become enamoured of the young Jane Seymour and encouraged by Anne's enemies, particularly Sir Nicholas Carew and the Seymours. In circumstances that have divided historians, Anne was accused of adultery with Mark Smeaton, a musician of the royal household, Sir Henry Norris, the King's groom of the stool and one of his closest friends, Sir Francis Weston, Sir William Brereton and her brother, George Boleyn, 2nd Viscount Rochford. The Imperial Ambassador, Eustace Chapuys, wrote to Charles V that: he himself has been authorised and commissioned by the king to prosecute and bring to an end the mistress's trial, to do which he had taken considerable trouble... He set himself to devise and conspire the said affair. Regardless of the role Cromwell played in Anne Boleyn's fall, and his confessed animosity to her, Chapuys's letter states that Cromwell claimed that he was acting with the King's authority. Most historians, however, are convinced that her fall and execution were engineered by Cromwell.