This paper investigates the printing in 1638 of the Relacion de la Vitoria qve Alcanzaron las Armas Catolicas en la Baia de Todos Santos contra Holandeses in the context of the project of the Count-Duke of Olivares to keep Portugal integrated to the Castile's crown, in the period in which the Iberian Union demonstrated signifi cant signs of wear. It was possible to identify Dom Juan de Palafox y Mendoza as the anonymous editor of that relation, and relate it to Bahia Siege - commanded by the Count João Maurício de Nassau-Siegen - historiographical debate.
Iberian Union; Bahia Siege (1638); Philippine period Press