Lambert Simnel was a pretender to the throne of England. In 1487, his claim to be Edward Plantagenet, 17th Earl of Warwick, threatened the newly established reign of Henry VII (1485–1509). Simnel became the figurehead of a Yorkist rebellion organised by John de la Pole, Earl of Lincoln. The rebellion was crushed in 1487. Simnel was pardoned because of his tender years, and was thereafter employed by the royal household as a scullion.

Edward Plantagenet, 17th Earl of Warwick was the son of Isabel Neville and George Plantagenet, 1st Duke of Clarence, and a potential claimant to the English throne during the reigns of both his uncle, Richard III (1483–1485), and Richard's successor, Henry VII (1485–1509). He was also a younger brother of Margaret Pole, 8th Countess of Salisbury. Edward was tried and executed for treason in 1499.