San Silvestro in Capite
In 1916 Pope Benedict XV elevated Sbarretti to the cardinalate as Cardinal-Priest of "San Silvestro in Capite". Then serving as Assessor of the Sacred Congregation of the Holy Office, he became Prefect of the Sacred Congregation of the council (predecessor of today's Congregation for the Clergy) in 1919. A Cardinal Bishop after 1928, he finally became Secretary of the Holy Office (today's Congregation for the Doctrine of the Faith), of which the Pope then personally served as Prefect in 1930, and Vice-Dean of the Sacred College of Cardinals in 1935.