Henry Cavendish, 2nd Duke of Newcastle
Henry Cavendish, 2nd Duke of Newcastle-upon-Tyne, KG, PC (24 June 1630 – 26 July 1691), styled Viscount Mansfield until 1676, was an English politician who sat in the House of Commons from 1660 to 1676, and then inherited the dukedom.
Cavendish was the only son of William Cavendish, 1st Duke of Newcastle-upon-Tyne and his first wife, Elizabeth Basset. His maternal grandparents were William Basset and Judith Austen, daughter of Thomas Austen.
In April 1660, Lord Mansfield was elected Member of Parliament (MP) for Derbyshire in the Convention Parliament. He was elected MP for Northumberland in 1661 for the Cavalier Parliament. In 1676 inherited the title as Duke of Newcastle.
In 1652, Henry married Frances Pierrepont (b. 1 September 1630 in Thoresby, Nottinghamshire, d. 23 September 1695 in London) and they had six children:
- Lady Elizabeth Cavendish (1654–1734), known as the 'Mad Duchess', who married firstly Christopher Monck, 2nd Duke of Albemarle; no issue. She married secondly Ralph Montagu, 1st Duke of Montagu; no issue.
- Henry Cavendish, Earl of Ogle (1659 – 1 November 1680), who married Elizabeth Seymour, Duchess of Somerset on 27 March 1679; no issue.
- Lady Frances Cavendish (25 June 1660 – 4 February 1690), who married John Campbell, 2nd Earl of Breadalbane and Holland (19 November 1662 – 23 February 1752) before 1690; no issue.
- Lady Margaret Cavendish (22 October 1661 – 24 December 1716), who married John Holles, 1st Duke of Newcastle-upon-Tyne on 1 March 1690 and had issue. (This being the second creation of the dukedom in 1694 after the first became extinct in 1691).
- Lady Catherine Cavendish (14 January 1665 – 20 April 1712), who married Thomas Tufton, 6th Earl of Thanet on 14 August 1684 and had issue.
- Lady Arabella Cavendish (19 August 1673 – 4 June 1698), who married Charles Spencer, 3rd Earl of Sunderland on 12 January 1695 and had issue.
The department of Manuscripts and Special Collections, The University of Nottingham holds a number of papers relating to the 2nd Duke of Newcastle: the Cavendish Papers (Pw 1), part of the Portland (Welbeck) Collection, includes some of his personal papers; and the Newcastle (Clumber) Collection (Ne) includes estate papers and family settlements from the time of the 2nd Duke.
Styles from birth to death
- Viscount Mansfield (1630–1660)
- Viscount Mansfield, MP (1660–1676)
- His Grace The Duke of Newcastle-upon-Tyne (1676–1677)
- His Grace The Duke of Newcastle-upon-Tyne, KG (1677–1679)
- His Grace The Duke of Newcastle-upon-Tyne, KG, PC (1679–1691)