Obornius, Thomas Osborne, earl of Danby, marquess of Camathen and 1st Duke of Leeds (February 20, 1631 - July 26, 1712), English statesman. Treasurer of the Navy 1668–1673, Lord High Treasurer 1673–1679, Lord President of the Council 1689–1699, Custos Rotulorum of the East Riding of Yorkshire 1689–1699, Justice in Eyre north of the Trent, 1711–1712.