Sweden and Russia. Cecilia, however, also came in conflict with John because she violated her permission by also attacking ships from friendly nations, such as Danish, which created tension between Sweden and Denmark. In the autumn of 1573, the Mornay plot was prepared to assassinate John III. The plot was led by Charles de Mornay, who was in contact with Christina of Denmark and the French ambassador in Copenhagen Charles Dancay. John III was to be killed during a swords dance performed by Scottish mercenaries at the party which was to be given in October that year before the Scottish mercenaries departure to the Baltic. After the assassination, Duke Charles was to be placed upon the throne. Charles de Mornay, who had previously been the favorite of Eric XIV, promised that he knew the location of Eric's alleged hidden gold reserve, which he would reveal after the coup in exchange for better conditions for Eric in prison. However, the plot did not materialize because at the party, de Mornay never dared to give the sign to the mercenaries to take action. In September 1574, the plot was revealed and Charles de Mornay was arrested, interrogated and executed. It was never made clear who participated in the plot. However, it is noted, that the suspected conspirators Hogenskild Bielke, Gustaf Banér and Pontus De la Gardie often gathered at meetings in the apartment of Princess Elizabeth, meetings where Princess Cecilia had also frequently been seen, and the two sisters and their brother Charles were somewhat compromised though they were never accused. It seem that John III suspected her to have prepared a rebellion against him: in 1573, he gave order that Cecilia was not to be allowed in the Stockholm Castle during his absence, and in 1574, after the plot had been exposed, he gave orders to the governors in Östergötland to keep Cecilia under watch and not to let her have access to any royal castle. On 2 August 1575, her absent consort Christopher died, and her under age son Edvard Fortunatus formally succeeded him as Margrave of Baden-Rodemarchern, albeit in his absence with her in Sweden. According to the marriage contract, Cecilia was secured the right to be regent should her son succeed while still minor. However, upon the death of Christopher, her former in-laws had the documents which secured her rights confiscated and took control over both her dower