Agnes Howard, Duchess of Norfolk Agnes Howard, Duchess of Norfolk Agnes Howard (née Tilney) (c. 1477 – May 1545) was the second wife of Thomas Howard, 2nd Duke of Norfolk. Two of King Henry VIII's Queens were her step-granddaughters, Anne Boleyn, and Catherine Howard. After her mother's death, Catherine Howard was in the Dowager Duchess's care during her youth, and as a result of the Duchess's lax guardianship, committed sexual indiscretions while in the Duchess's household which led to her execution as Queen. Agnes' brother, Sir Philip Tilney of Shelley (d.1533), was the paternal grandfather of Edmund Tilney (1535/6–1610), Master of the Revels to Queen
Agnes Howard, Duchess of Norfolk of the view that there was as much reason to convict the Dowager Duchess of treason as there had been to convict Dereham. However the Council urged leniency, and she was eventually released from the Tower on 5 May 1542. Her stepson, the Duke of Norfolk, escaped punishment, but was never fully trusted again by the King. The Dowager Duchess died in May 1545, and was buried at Thetford Priory on the 31st of that month. On 31 October, as directed in her will, she was re-interred at Lambeth Church in Surrey. Agnes Howard, Duchess of Norfolk Agnes Howard (née