Their resentment was all the more bitter when at the instance of the pope he mediated between them and Hungary and brought about peace on terms unfavourable to the republic. He received Feltre, Belluno and Cividale from the Hungarian king, but in 1369 a frontier dispute led to war between him and Venice.
At the same time it mediated between the companies and the employees, and in June a settlement was formally concluded between the ministers of public works and of the treasury and the directors of the companies concerning the grievances of the employees.
of England had mediated to make peace, and Charles was liberated on the understanding that he was to retain Naples alone, Sicily being left to the Aragonese; Charles was also to induce his cousin Charles of Valois to renounce for twenty thousand pounds of silver the kingdom of Aragon which had been given to him by Pope Martin IV.
The new pope Boniface VIII., elected in 1294 at Naples under the auspices of King Charles, mediated between the latter and James, and a most dishonourable treaty was signed: James was to marry Charles's daughter Bianca and was promised the investiture by the pope of Sardinia and Corsica, while he was to leave the Angevin a free hand in Sicily and even to assist him if the Sicilians resisted.
Mediation has also been occasionally employed where differences have arisen as to the interpretation of treaties or as to the mode in which they ought to be carried out: as when Great Britain mediated between France and the United States with regard to the Treaty of Paris of the 4th of July 1830.