Perkin Warbeck (c. 1474 - November 23, 1499) was a pretender to the English throne during the reign of King Henry VII of England. He was an impostor, pretending to be Richard of Shrewsbury, 1st Duke of York, the younger son of King Edward IV of England, but was in fact a Fleming born in Tournai around 1474. He was the son of John Warbeck and Katherine de Faro. The real Richard of Shrewsbury was almost certainly dead by this time, most likely murdered in the Tower of London. Wikipedia
The definitive Wikipedia entry for Perkin Warbeck. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Perkin_Warbeck