Henry Cavendish, 2nd Duke of Newcastle

Henry Cavendish, 2nd Duke of Newcastle upon Tyne, KGPCMP (24 June 1630 – 26 July 1691), styled Lord Henry Cavendish until 1659 and Viscount Mansfield from 1659 to 1676, was an English politician. He sat in the House of Commons from 1660 until 1676, when he inherited the dukedom. He was an adherent of James II and lost his public offices following the Glorious Revolution of 1688. He is also an 8th great-grandfather to King Charles III.