As soon as Antonio heard of this news, he gave immediate orders to arrest the prince, despite the blood ties that united them and the violation of the sacred right of asylum in a church.
At the time, the episode caused a considerable stir, attracting the ire of the pro-Austrians and the applause of the pro-Spanish Italians.
The story of Antonio and Prince Della Riccia also reached the ears of King Philip V of Spain who, intending to exploit this episode for his own propaganda, decided to publicly reward Boncompagni by creating him Grand Seneschal of the Kingdom of Naples and in 1702 awarded him with the Order of the Golden Fleece.
His pro-Spanish reputation excluded him from taking an active part in the social, court or political life of the Kingdom.
Antonio I decided to live the rest of his life in his fiefdom of Sora, working hard for the implementation of the local fiber processing and weaving industry, especially in Isola del Liri and Arpino, establishing commercial routes with the Papal States.