Viglius (October 19, 1507, Swichum – May 5, 1577), was the name taken by Wigle Aytta van Zwichem, a Dutch statesman and jurist, a Frisian by birth.
He studied at various universities—Louvain, Dole and Bourges among others—devoting himself mainly to the study of jurisprudence, and afterwards visited many of the principal seats of learning in Europe. His great abilities attracted the notice of Erasmus and other celebrated men, and his renown was soon wide and general.
Having lectured on law at the universities of Bourges and Padua, he accepted a judicial position under the bishop of Münster which he resigned in 1535 to become assessor of the imperial court of justice (Reichskammergericht). He would not, however, undertake the post of tutor to Philip, son of Emperor Charles V; nor would he accept any of the many lucrative and honorable positions offered him by various European princes, preferring instead to remain at the University of Ingolstadt, where for five years he occupied a professorial chair.
In 1542 the official connection of Viglius with the Netherlands began. At the emperor's invitation he became a member of the council of Mechlin, and some years later president of that body. Other responsible positions were entrusted to him, and he was soon one of the most trusted of the ministers of Charles V, whom he accompanied during the War of the League of Schmalkalden in 1546. His rapid rise in the emperor's favor was probably due to his immense store of learning, which was useful in asserting the imperial rights where disputes arose between the empire and the estates.
He was generally regarded as the author of the edict against toleration issued in 1550; a charge which he denied, maintaining, on the contrary, that he had vainly tried to induce Charles to modify its rigour. When the emperor abdicated in 1555 Viglius was anxious to retire also, but at the instance of King Philip II he remained at his post and was rewarded by being made coadjutor abbot of St. Bavon, and in other ways.