Cardinal Guise and the Grand Prior would largely be a peripheral presence in the discussions that followed, with Guise and Lorraine exploring the possibility of converting to Lutheranism with the Protestant German duke. Lutheranism was a far more agreeable creed for the Guise than the Calvinism which dominated French Protestantism. The meeting ended positively, with Lorraine opining that he would trade his red robe for a black one. However the initiative of the meeting would be destroyed on the duke of Guise's return to France, his troops massacring a Protestant service as they passed through Wassy. Assassination of the Duke of Guise After the assassination of the Cardinal's brother, the duke of Guise in March 1563, Cardinal Guise and his brother Claude, Duke of Aumale hurried to the scene to see their brother off, and ensure his exit was stage managed in a suitably hardline Catholic fashion. The death of Antoine of Navarre, their cousin in October 1562 had been plagued with rumours of religious unorthodoxy. To this end, they selected an arch conservative confessor for him the Bishop of Riez. He reported that the duke enjoyed the Epistle of James in his final moments, a controversial epistile, described by Martin Luther as an 'epistle of straw', and that the duke defended the Real Presence. Those who were with Riez at the duke's deathbed disputed much of what he said, however by this point the words were already circulating in print. Aumale and Cardinal Guise had succeeded in their objective. Peace With the first war of religion brought to a close by the Peace of Amboise. Catherine de Medici worked hard to secure the nobility was reconciled with each other. To this end she sort to rehabilitate the Prince of Condé who had led the rebel army during the war. She proudly informed the duchesse de Guise that Cardinal Guise and Jacques, Duke of Nemours were reconciled with the Prince. In the years of peace that followed, Cardinal Guise would be a regular fixture on the conseil privé. He and his brother Lorraine (after his return) represented the hardline Catholic position in the court, alongside the Duke of Montpensier and Nevers. During the royal tour that circumnavigated the kingdom from 1564-1566, Cardinal Guise was the only member of his family who accompanied the court on its journey. The rest of his family, feeling the sting of royal displeasure having retreated