**Todhunter, Isaac**, mathematician, born at Rye; educated at University
College, London, and at Cambridge, where he graduated senior wrangler and
Smith's prizeman in 1848; elected Fellow and principal mathematical
lecturer of his college (St. John's), and soon became widely known in
educational circles by his various and excellent handbooks and treatises
on mathematical subjects (1820‒1884).

Definition taken from
*The Nuttall Encyclopædia*,
edited by the Reverend James Wood (1907)