Santa Cristina castle hosted in the past illustrious prelates members of the family, such as Cardinal Prospero Caterini, senior advisor of Pope Pius IX and eminent figure during the" Risorgimento", the making of the Italian united kingdom in the transition from the ex Vatican state. Particularly during 1848 as a result of the expulsion of the pope from Rome by the patriots who wanted Rome as part of a united Italy, pope Pius IX fled and took refuge in Gaeta fortress under the protection of the King of Naples.
In that meanwhile Cardinal Prospero Caterini was commissioned by the pope himself to save the treasure of San Pietro with important documents and precious things. Then Cardinal Caterini with a caravan of wagons accomplished the transportation of values to his family estate of Santa Cristina castle, and then with an adventurous voyage by sea via Corsica finally reached the Pope in Gaeta After 1848 the Cardinal returned often to spend his holidays in the estate managed by his brother Maffeo, and already quiet summer residence and hunting lodge of the family Caterini. It was there that he met the family Pacelli who later trusted upon him a promising young seminarian whose name was Eugenio Pacelli to be tutored. Years later he became pope as Pope Pius XII. For centuries the family history of the Caterinis often intertwined with that of the Pacelli family.
The clean air of the estate even then was recommended for frail people. and so it was that Eugenio Pacelli, during his summer holidays as a young seminarian, often came to spend his free time in the company of his relatives Pacelli and Caterini.