Augustus De Morgan 1806–1871 Source: Wikimedia Commons About Augustus De Morgan British mathematician and logician (1806–1871) People from the Same Era William Parsons, 3rd Earl of Rosse 1800–1867 astronomer, politician York Leopoldo O'Donnell, 1st Duke of Tetuan 1809–1867 military personnel, politician Santa Cruz de Tenerife Ivan Glebov 1806–1884 scientist Ryazan Governorate Harriet Mary Montagu 1805–1857 socialite John Russell Bartlett 1805–1886 explorer, historian, librarian, linguist, politician, writer Providence Eleonora Tyutcheva 1800–1838 writer Kassel