Diana married Henry de Vere, 18th Earl of Oxford on 1 Jan 1623. Henry (son of Edward of Oxford de Vere, 17th Earl of Oxford and Elizabeth Trentham, Countess Oxford) was born on 24 Feb 1593; was christened on 31 Mar 1593 in Stoke Newington, Middlesex; died in Jun 1625 in The Hague, Netherlands; was buried on 15 Jul 1625 in Westminster Abbey, London, England. [Group Sheet] [Family Chart]