Duarte Leite Pereira da Silva, GCC (11 August 1864 in Porto – 29 September 1950 in Porto; Portuguese pronunciation: [duˈaɾtɨ ˈlɐjtɨ]), was a Portuguese historian, mathematician, journalist, diplomat and politician. He graduated in Mathematics at the University of Coimbra, in 1885. He taught at the Politecnic Academy of Porto, from 1886 to 1911. Meanwhile, he was also the director of the newspaper diary "A Pátria". As a historian, he published many studies, later compiled in "História dos Descobrimentos" (History of the Discoveries), in 2 volumes. Source: Wikipedia (en)