Squire of Nuno Álvares Pereira. Appointed governor of the Castle of Chaves by Nuno Álvares Pereira. This was after King João I of Portugal gave the castle to Nuno Álvares, following its capitulation at the end of a four-month long siege (1386). Chronicle entries in which Vasco Machado appears: Crónica de D. João I, part 2, ch. 69