Family/Spouse: Katherine Grey, Lady Countess of Hertford. Katherine (daughter of Henry Grey, 1st Duke of Suffolk 3rd Marquess of Dorset KB KG and Frances Brandon, Lady Duchess of Suffolk) was born on 25 Aug 1540 in Bradgate Park, Leicester, England; died on 26 Jan 1568 in Cockfield Hall, Yoxford, Suffolk, England. [Group Sheet] [Family Chart]