It will be observed that these early cases were all of them tried in the secular courts; but there is no reason to doubt that the ecclesiastical courts were quite as active, and their zeal must have been quickened by the statute of 1401, which in cases of heresy made the lay power their executioner. It was at nearly the same time, however, that the charge of sorcery began to be frequently used as a political weapon. In such cases, of course, the accused was usually a person of influence and the matter was tried in the council. It will be seen, then, that the crime was one that might fall either under ecclesiastical or conciliar jurisdiction and the particular circumstances usually determined finally the jurisdiction. When Henry IV was informed that the diocese of Lincoln was full of sorcerers, magicians, enchanters, necromancers, diviners, and soothsayers, he sent a letter to the bishop requiring him to search for sorcerers and to commit them to prison after conviction, or even before, if it should seem expedient.[7] This was entrusting the matter to the church, but the order was given by authority of the king, not improbably after the matter had been discussed in the council. In the reign of Henry VI conciliar and ecclesiastical authorities both took part at different times and in different ways. Thomas Northfield, a member of the Order of Preachers in Worcester and a professor of divinity, was brought before the council, together with all suspected matter belonging to him, and especially his books treating of sorcery. Pike does not tell us the outcome.[8] In the same year there were summoned before the council three humbler sorcerers, Margery Jourdemain, John Virley, a cleric, and John Ashwell, a friar of the Order of the Holy Cross. It would be hard to say whether the three were in any way connected with political intrigue. It is possible that they were suspected of sorcery against the sovereign. They were all, however, dismissed on giving security.[9] It was only a few years after this instance of conciliar jurisdiction that a much more important case was turned over to the clergy. The story of Eleanor Cobham, Duchess of Gloucester, is a familiar one. It was determined by the enemies of Duke Humphrey of Gloucester to attack him through his wife, who was believed to be influential with the young king. The first move was made by arresting a Roger Bolingbroke who had been connected with the duke and the duchess, and who was said to be an astronomer or necromancer. It was declared that he had cast the duchess's horoscope with a view to ascertaining her chances to the throne. Bolingbroke made confession, and Eleanor was then brought before "certayne bisshoppis of the kyngis." In the mean time several lords, members of the privy council, were authorized to "enquire of al maner tresons, sorcery, and alle othir thyngis that myghte in eny wise ... concerne harmfulli the kyngis persone."[10] Bolingbroke and a clergyman, Thomas Southwell, were