Lambert Simnel (c. 1477 – c. 1525) was an imposter to the throne of England. His claim to be the Earl of Warwick in 1487 threatened the newly established reign of King Henry VII (reigned 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 and was thereafter employed in the Royal kitchens as a servant.
Simnel was born around 1477. His real name is not known – contemporary records call him John, not Lambert, and even his surname is suspect. Different sources have different claims of his parentage, from a baker and tradesman to organ builder. Most definitely, he was of humble origin. At the age of about ten, he was taken as a pupil by an Oxford-trained priest named Richard Simon (or Richard Symonds / Richard Simons / William Symonds) who apparently decided to become a kingmaker. He tutored the boy in courtly manners and contemporaries described the boy as handsome. He was taught the necessary etiquette and was well educated by Simon. One contemporary described him as "a boy so learned, that, had he ruled, he would have as a learned man."
Simon noticed a striking resemblance between Lambert and the sons of Edward IV, so he initially intended to present Simnel as Richard, Duke of York, son of King Edward IV, the younger of the vanished Princes in the Tower. However, when he heard rumours that the Earl of Warwick had died during his imprisonment in the Tower of London, he changed his mind. The real Warwick was a boy of about the same age and had a claim to the throne as the son of the Duke of Clarence, King Edward IV's brother.