He was Squire in the service of Prince Henry and he was a crew member of the ship commanded by Nuno Tristão in 1446. He witnessed the death of the captain during a combat with the natives. Álvaro Costa returned to the Kingdom in a ship commanded by Aires Tinoco.

Bibliography:
ZURARA, Gomes Eanes de, Crónica dos feitos notáveis que se passaram na conquista de Guiné por mandado do infante D. Henrique, 2 vols., Lisboa, Academia Portuguesa de História, 1981.

Author: Teresa Lacerda
Translated by: Ana Pereira