For reasons unknown, Pope Innocent X reneged on the deal and Antonio and his brother Taddeo were accused of financial abuses during the War of Castro. The two went into exile in 1645 in Paris under the protection of Cardinal Mazarin, and were joined a year later by Francesco. Before leaving Rome, Antonio had the crest of the King of France affixed above his door as a warning to his political rivals that he was now protected by the French Kingdom.