History of Edward, Earl of Warwick
Edward Plantagenet, Earl of Warwick (1475-1499) Son of George, Duke of Clarence and Isabelle Neville, daughter of the "king maker". Following the Death of King Richard III in 1485, Henry VII imprisons the 10 year old Warwick in the Tower. In 1499, the pretender Perkin Warbeck and Warwick plotted to have Warwick escape from the tower. Aged 24, he is executed for treason for trying to set himself free. On Warwick's death the house of Plantagenet became extinct in the legitimate male line.
Jasper Tudor (1431-1495) - Find a Grave Memorial
Full image of Jasper Tudor, Henry VIII's great uncle. When Edward IV took the throne from Henry VI, (who was Jasper and Edmund's half brother & had declared his brothers legitimate), Edward immediately declared Jasper illegitimate (Edmund being dead by this time) & fearful that Jasper would claim the throne and put Henry VII, his nephew, as heir apparent, ordered them killed. Jasper and Henry VII went into exile abroad until Henry came back to defeat Edward's brother, Richard III, at Boswort...
John Beaufort, 1st Marquess of Somerset and 1st Marquess of Dorset, later only 1st Earl of Somerset, KG (1373 – 16 March 1410) was the first of the four illegitimate children of John of Gaunt, 1st Duke of Lancaster, and his mistress Katherine Swynford, later his wife. Beaufort was born in about 1371 and his surname probably reflects his father's lordship of Beaufort in Champagne, France