Thomas Spencer Baynes (1823-1887) was a philosopher, son of a Baptist
minister, born at Wellington, Somerset, intended to study for Baptist ministry, and was at a theological seminary at Bath with that view, but being strongly attracted to philosophical studies, left it and went to Edinburgh, when he became the favourite pupil of Sir William Hamilton, of whose philosophical system he continued an adherent. After working as editor of a newspaper in Edinburgh, and after an interval of rest rendered necessary by a breakdown in health, he resumed journalistic work in 1858 as assistant editor of the Daily News. In 1864 he was appointed Professor of Logic and English Literature at St. Andrews, in which capacity his mind was drawn to the study of Shakespeare, and he contributed to the Edinburgh Review and Fraser's Magazine valuable papers (chiefly relating to his vocabulary and the extent of his learning) afterwards collected as Shakespeare Studies . In 1873 he was appointed to superintend the ninth ed. of the Encyclopędia Britannica, in which, after 1880, he was assisted by William Robertson Smith.