 In 1547 he participated in the funeral of Henry VIII, as one of the lords carrying the canopy over the late king's coffin.On 28 February 1549 he was present in the House of Lords when the bill of attainder was passed on his wife's brother Thomas Seymour and again in January 1550 during proceedings against his brother-in-law and patron Edward Seymour, Duke of Somerset.Gregory Cromwell died of sweating sickness on 4 July 1551 at his home, Launde Abbey, Leicestershire, and on 7 July 1551 was buried in a magnificent tomb in the chapel there.