The Nuttall Encyclopedia
An impostor who affected to be Richard, Duke of York, second son of Edward IV., alleged to have been murdered in the Tower, and laid claim to the crown of England in preference to Henry VII. In an attempt to make good this claim he was taken prisoner, and hanged at Tyburn in 1499.
Wood, James, ed. Entry for 'Warbeck, Perkin'. The Nuttall Encyclopedia. https://www.studylight.org/encyclopedias/eng/nut/w/warbeck-perkin.html. Frederick Warne & Co Ltd. London. 1900.