He was born to Portuguese settler parents. His father emigrated from Ponte de Lima in Northern Portugal in 1898 and owned a cattle ranch. His mother's side of the family emigrated from the Azores.
Dos Santos served as the 18th vice president of Brazil under General Ernesto Geisel from 1974 to 1979. He was the last military Vice President of Brazil.
References
^"SANTOS, Adalberto Pereira dos". Dicionário Histórico-Biográfico Brasileiro. Rio de Janeiro: Centro de Pesquisa e Documentação de História Contemporânea do Brasil (Fundação Getulio Vargas). 2024. Retrieved 2024-02-01.