After the unification of Italy and the confiscation of religious properties by the State, the Passionists left the monastery.
In 1876 the convent became an observatory "Franco Fuligni" founded by the Jesuit
astronomer Father Angelo Secchi (1818-1878);
On December 3, 1788, Henry Cardinal York consecrated a gold chalice for the parish church of Rocca di Papa (the name Rocca di Papa means Rock Castle of the Pope, as it was named for Pope Eugene III). I do not know if the chalice survives.
Link (here) to A Jacobite Gazetteer