He was the son of Eufrásio Caetano Bossa and Maria Ferreira.
On 11 May 1935 he was promoted from his position of Sub-Secretário de Estado das Colónias (Sub-Secretary of State for the Colonies), during the 7th government of António Salazar, to become the Minister Of The Colonies, until January 18, 1936 .[1]
Between 1946 and 1947 he was appointed General Governor of Portuguese India by Portuguese President Oscar Carmona.[2] He was greatly opposed to Goan nationalism.[3]
On 30 April 1946 he was made a Grand Officer of the Military Order of Christ.[4]