William Saunders Sebright Lascelles

William Saunders Sebright Lascelles PC (October 29, 1798 – July 2, 1851) was a British politician and the second son of Henry Lascelles, 2nd Earl of Harewood.

On May 14, 1823, he married Lady Caroline Georgiana Howard (d. 1881), daughter of George Howard, 7th Earl of Carlisle and they had nine children:

Henrietta Frances Lascelles (d. 1884), married William Cavendish, 2nd Baron Chesham and had issue.
Georgiana Caroline Lascelles (d. 1911), married Charles William Grenfell, a grandson of William Molyneux, 2nd Earl of Sefton and had issue.
Emma Elizabeth Lascelles (d. 1920), married Lord Edward Cavendish, son of William Cavendish, 7th Duke of Devonshire and had issue.
Beatrice Blanche Lascelles (d. 1915), married Frederick Temple, Archbishop of Canterbury.
Major Claude George William Lascelles (1831–1903), died unmarried.
Edwin Lascelles (1833–1877), died unmarried.
Mary Louise Lascelles (c. 1836–1917), died unmarried.
Rt. Hon. Sir Frank Cavendish Lascelles (1841–1920), married Mary Emma Olliffe and had issue.
Lt.-Col. Henry Arthur Lascelles (1842–1913), married Caroline Maria Gore, brother of Charles Gore and had issue.

William entered Parliament as Member for East Looe in 1826. He was subsequently MP for Northallerton from 1831 to 1832 and for Wakefield from 1837 to 1841 and also from 1842–1847. He was sworn of the Privy Council in 1847, made Comptroller of the Household, and returned for Knaresborough, which he represented until his death.

Parliament of the United Kingdom
Preceded by Thomas Potter Macqueen Lord Perceval	Member of Parliament for East Looe with James Drummond Buller-Elphinstone 1826-1829 Henry Thomas Hope 1829-1830 1826–1830	Succeeded by Henry Thomas Hope Thomas Arthur Kemmis
Preceded by Viscount Lascelles Sir John Poer Beresford, Bt	Member of Parliament for Northallerton with Sir John Poer Beresford, Bt 1831–1832	Succeeded by John George Boss
Preceded by Daniel Gaskell	Member of Parliament for Wakefield 1837–1841	Succeeded by Joseph Holdsworth
Preceded by Joseph Holdsworth	Member of Parliament for Wakefield 1842–1847	Succeeded by George Sandars
Preceded by Andrew Lawson William Busfield Ferrand	Member of Parliament for Knaresborough with Joshua Proctor Brown Westhead 1847–1851	Succeeded by Joshua Proctor Brown Westhead Thomas Collins
Political offices
Preceded by Lord Arthur Hill	Comptroller of the Household 1847–1851	Succeeded by Earl of Mulgrave