Girolamo Rusticucci was an Italian Roman Catholic cardinal and bishop. He was personal secretary to Cardinal Michele Ghislieri, later Pope Pius V, who made Rusticucci a cardinal. He occupied numerous important positions, including papal legate to France and Spain, Camerlengo (treasurer) and Vice-Dean of the College of Cardinals, and Vicar General of Rome.

The Church of Saint Susanna at the Baths of Diocletian is a Roman Catholic parish church located on the Quirinal Hill in Rome, Italy. There has been a titular church associated to its site as far back as AD 280. The current church was rebuilt from 1585 to 1603 for a monastery of Cistercian nuns founded on the site in 1587, which still exists there.