He succeeded Chagas as prime minister of another Portuguese Republican Party government, which was in power from 11 November 1911 to 4 June 1912.

Later he served as plenipotentiary minister in Madrid (1913–1914) and London (1914–1919), during World War I, which Portugal entered in 1916 on the Allies' side.

He helped to solve international conflicts, like the Chaco War between Bolivia and Paraguay in 1935.

His father was a natural son of António César de Vasconcelos Correia, 1st Viscount and 1st Count of Torres Novas and 93rd Governor-General of India, thus being a second cousin once removed of Fernando Peyroteo and three times removed of José Couceiro.

He married in Lisbon, Santa Catarina, Hermínia Laura de Albuquerque Henriques Moreira (Castelo Branco, Sé, 2 September 1869 – Lisbon, Santa Catarina, 28 September 1947), widow of Augusto Pereira Leite and daughter of José Joaquim Henriques Moreira (Lisbon, Alcântara, 29 April 1820 – 6 January 1895), division general, commander of the Municipal Guard, Commander of the Order of Aviz and Knight of the Order of the Tower and Sword, etc., and wife (m. 7 November 1868) Maria Hermínia de Albuquerque de Mesquita e Paiva (15 October 1844 – 7 June 1910), daughter of the 2nd Viscount (formerly Barons) of Oleiros, and had: