Twiss was born in London on 19 March 1809, and died there on 14 January 1897. He was the son of Rev. Robert Twiss and his wife Fanny, née Walker. He was educated privately and then attended University College, Oxford in 1826, where he studied mathematics and classics (BA 1830, MA 1832). He was a fellow of University College from 1830–63, and was tutor in mathematics from 1836–43; he also served as bursar in 1835 and dean in 1837. A polymath, he was also fluent in German and wrote an early and influential critique of Niebuhr's History of Rome and produced an annotated edition of Livy in 1841. At the same time he was studying law at Lincoln's Inn, to which he was admitted in 1835, and he was called to the bar in 1840.
From The Biographical Dictionary of British Economists in Oxford Reference.