 On 23 December 1559, the counsellor-clerk Anne du Bourg, magistrate at the Parlement of Paris, which had contested the repression, was publicly executed in Paris at the Place de Grève.Determined to stop the persecution and have Protestantism officially recognised, a group of noblemen planned the Amboise conspiracy to overthrow the government and give power to the Princes of the Blood, who supported the new religion.The conspirators planned to take over the palace with the help of the royal guard, abduct the king, then eliminate the Guises if they offered any resistance.