Edward VI: My Devise for the Succession (Petyt Ms. 538.47, fol. 317) The dying King Edward VI, then aged 16, prepared his "devise for the succession" in the second week of June 1553. This draft is in his own handwriting. Edward was the only surviving son of Henry VIII, by Henry's third wife, Jane Seymour. At the instigation of his Protector, the Duke of Northumberland, he drew up this devise in an attempt to exclude his half-sisters Mary and Elizabeth in favour of his cousin Lady Jane Grey, Northumberland's daughter-in-law. © Inner Temple Library