An act against Jesuits, seminary priests, and such other like disobedient persons, also known as the Jesuits, etc. Act 1584, was an Act of the Parliament of England passed during the English Reformation. The Act commanded all Roman Catholic priests to leave the country within 40 days or they would be punished for high treason, unless within the 40 days, they swore an oath to obey the Queen. Those who harboured them, and all those who knew of their presence and failed to inform the authorities, would be fined and imprisoned for felony, or if the authorities wished to make an example of them, they might be executed for treason.
Sir John Arundell of Lanherne: he and his wife, Lady Anne Stanley, were the patrons of the Catholic martyr John Cornelius, whom they harboured in their house in breach of the 1584 Act