When Belizario Alvarado Segura was born in 1936, in Jaén, Cajamarca, Peru, his father, Conrado Alvarado Tantalean, was 53 and his mother, Santos Ines Segura Orrego, was 20. He married Paulina Ramirez in 1949, in Jaén, Cajamarca, Peru. They were the parents of at least 1 son. He died on 14 June 1952, at the age of 16.