William Courtenay had three children: Henry Courtenay (c. 1496 – 9 January 1539), 2nd Earl of Devon and Marquess of Exeter. Married firstly with Elizabeth Grey, suo jure Viscountess Lisle, and secondly with Gertrude Blount. From his second marriage, Henry had two sons, of whom only one survived infancy. Edward Courtenay (c. 1497 – June 1502), died in infancy. Margaret Courtenay (c. 1499 – bef. 1526), married Henry Somerset, son and heir of the 1st Earl of Worcester and Elizabeth Somerset, suo jure Baroness Herbert. During Margaret's life, her husband bore only the title of Baron Herbert, inherited from his mother, since the title of his father passed to him later. The marriage was childless. Since not a single brother of the princess survived to the reign of the kings from the Tudor dynasty, and her sisters (with the exception of Queen Elizabeth), did not leave surviving descendants recognized by the crown, Catherine's children became the only of all the grandchildren of Edward IV, who inherited dangerous claims to the English throne from the House of York, which played a fatal role in the life of the descendants of the princess. Although Catherine's son, Henry Courtenay, was still in favor with the king for some time after his mother's death, in 1538, thanks to the denunciation of his cousin Geoffrey Pole, Henry's correspondence with Geoffrey's brother, Catholic Cardinal Reginald Pole, who claimed the throne of England, was discovered. Henry, along with his wife Gertrude and son Edward, was arrested and imprisoned in the Tower of London; a year later, Henry was executed on charges of treason. After the execution of her husband, Gertrude was deprived of her property, but received her freedom. The only son of Gertrude was much less fortunate: he spent most of his life in prison and was released only during the reign of Queen Mary I; in 1554, Edward Courtenay took only a passive part in Wyatt's rebellion, due to which he was expelled from the country, but not executed. He died at Padua in 1556, as the last descendant of Catherine of York. Ancestry Notes Citations References External links Possible discovery of Catherine's tomb . familysearch.org. Retrieved 26 January 2008 Plantagenet family. Retrieved 26 January 2008 1479 births 1527 deaths People from Greenwich House of York English princesses Devon 16th-century English women 15th-century English women 15th-century English people Burials in Devon Children of Edward IV