Augustus De Morgan (1806–1871) by John Jabez Edwin Mayall © National Portrait Gallery, London
Article
Leslie Stephen
revised by I. Grattan-Guinness
Morgan, Augustus De (1806–1871), mathematician and historian, fifth child of Colonel John De Morgan (1772–1816) of the Indian army, was born on 27 June 1806 at Madura in the far south of India. His mother, Elizabeth (1776–1856), was the daughter of John Dodson...