Background
He was the third son of Miguel António de Sousa Horta Almeida e Vasconcelos, 2nd Baron of Santa Comba Dão and second wife Maria da Glória da Costa Brandão e Albuquerque.
He was the third son of Miguel António de Sousa Horta Almeida e Vasconcelos, 2nd Baron of Santa Comba Dão and second wife Maria da Glória da Costa Brandão e Albuquerque.
He was a Bachelor graduated in Law from the University of Coimbra, Judge of Law in Portuguese Guinea, having served in the interim the offices of Governor-General and Secretary General of the Province of Mozambique and, as an effective, the one of Delegate of the Procurator of the Crown and Treasury of Inhambane and Mozambique, and the one of Administrator of the Council of Soure, later becoming Judge Counselor of the Supreme Court of Justice. He married firstly on 15 February 1885 Guilhermina de Carvalho da Costa Soares (3 November 1868 - 15 July 1888), daughter of Doctor Pedro da Costa Soares, Bachelor graduated in Law from the University of Coimbra, Captain-Major of the firm land of Mozambique, and Guilhermina Cândida da Costa Ferreira, without issue.
Álvaro Luís da Câmara de Sousa Horta e Costa (22 October 1892 - ?), married on 25 April 1918 Mary Oackley (19 February 1891 - 30 May 1925), daughter of English Hugh Charles George Oackley, Consul of the United Kingdom in Lisbon, and Maria Amélia de Aguiar, and had two sons:
António Hugo Oackley de Sousa Horta e Costa (born 19 August 1919), married on 19 August 1942 Noémia de Castro dos Anjos, daughter of Eurico dos Anjos and Albina de Castro, and had one daughter:
Maria Madalena dos Anjos Horta e Costa (born 27 June 1943), without further notice
Carlos Maria Oackley de Sousa Horta e Costa (born 8 May 1925), without further notice
Maria Luísa da Câmara de Sousa Horta e Costa (6 April 1902 - ?), married on 12 March 1921 Civil Engineer Vasco Jácome Correia Martins (28 December 1892 - ?), son of Vasco Correia Martins, Army General, et cetera, and Leopoldina Alves Pereira de Alvarenga, and had issue.