Twiss was born at Bath, Somerset, the son of Francis Twiss (1760–1827) and his wife Frances née Kemble (sister of Sarah Siddons née Kemble). He was a Shakespearian scholar. In his youth he wrote light articles for newspapers; he became a successful lawyer and was appointed a Queen's Counsel in 1827. In 1820 he was elected to Parliament, where, with some interruptions, he sat until 1841, holding the office of Under-Secretary of State for War and the Colonies in 1828–1830. In 1844 he was appointed vice-chancellor of the Duchy of Lancaster, a well-paid post which enabled him to enjoy his popularity in London society. For some years he wrote for The Times, in which he first compiled the parliamentary summary, and his daughter married first Francis Bacon (d. 1840) and then J. T. Delane, both of them editors of that paper. He was the author of The Public and Private Life of Lord Chancellor Eldon, and other volumes. He died suddenly in London on 4 May 1849, aged 62.
- Fisher, David R. (ed) (2009). The History of Parliament: the House of Commons 1820-1832. Cambridge: Cambridge University Press. ISBN 9780521193146.
- Chisholm 1911.
- This article incorporates text from a publication now in the public domain: Chisholm, Hugh, ed. (1911). "Twiss, Horace". Encyclopædia Britannica. 27 (11th ed.). Cambridge University Press.
- Courtney, William Prideaux (1899). "Twiss, Horace". In Lee, Sidney. Dictionary of National Biography. 57. London: Smith, Elder & Co.
- Courtney, W. P. "Twiss, Horace (1787–1849)". Oxford Dictionary of National Biography (online ed.). Oxford University Press. doi:10.1093/ref:odnb/27917.
|last2=in Authors list (help) (Subscription or UK public library membership required.)
- Hansard 1803–2005: contributions in Parliament by Horace Twiss
- Leigh Rayment's Historical List of MPs [self-published source][better source needed]
|Parliament of the United Kingdom|
William Taylor Money
|Member of Parliament for Wootton Bassett
With: Sir George Philips, Bt
Thomas Hyde Villiers
The Viscount Mahon
William Henry John Scott
|Member of Parliament for Newport (Isle of Wight)
With: Spencer Perceval
James Joseph Hope-Vere
|Member of Parliament for Bridport
With: Henry Warburton
Lord Francis Leveson-Gower
|Under-Secretary of State for War and the Colonies