Numbers of Beghards joined the Brethren of the Cross, and the two sects were confounded in the rigorous persecution conducted in Germany by the inquisitor Eylard Schoneveld, who almost annihilated the flagellants.
Ultimately Vieira returned to Portugal with a papal bull exempting him from the jurisdiction of the grand inquisitor, and in January 1681 he embarked for Brazil.
The oldest trustworthy sources know nothing of his having exercised the office of Inquisitor during the Albigensian war" (Griitzmacher).
He was successively inquisitor at Malta, vice-legate at Ferrara and nuncio in Cologne (1639-1651).
It is so Christian in tone, he quaintly remarks elsewhere, that an inquisitor might have used it quite as well as a heretic. In it the Perfect addresses the postulant, as in the corresponding Armenian rite, by the name of Peter; and explains to him from Scripture the indwelling of the spirit in the Perfect, and his adoption as a son by God.