HENRY, LORD GREY OF CODNOR. Born in 1435 and aged 9 when his father died in 1444, his mother was Margaret Percy, youngest daughter of Sir Henry Percy d’Atholl, and sister of Sir Thomas Burgh’s Mother Elizabeth – co-heiresses to their father.
In 1452 John, Viscount Beaumont paid 400 marks for the wardship of the young Henry and, in 1457, aged 21, he allowed to enter his title and lands. 

Named in Commissions from 1448, Lord Grey initially supported Henry VI, appointed Keeper of The Kings Armoury in the Tower of London, fighting at 2nd St.Albans with Queen Margaret, and at Towton before making his peace with Edward IV. Lord Grey had also inherited a nasty feud with the Vernon family of Haddon Hall in Derbyshire, who had fallen out with the Gresley family of Drakelow. In 1464 Lord Grey indented with William, Lord Hastings as a retainer…


although I think this actually comes from here