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In page Bartolomeo Pacca:

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The rest of Pacca's life was occupied in the affairs of the different congregations to which he was assigned, and in the administration of the suburbicarian sees. In 1818 he became Prefect of the Sacred Congregation of Bishops and Regulars (clergy who lived under a Rule). At the Consistory of 21 December 1818, he was promoted to the rank of Cardinal-Bishop, with the suburbicarian See of Frascati; he exchanged this See for the See of Porto and Santa Rufina on 13 August 1821. Upon the death of Pope Pius VII, as Cardinal Camerlengo he presided over the arrangements for the conclave of 1823. He resigned the office of Camerlengo in 1824, when Pope Leo XII appointed him pro-datary, he was the first to hold the post of cardinal legate of Velletri, and he was active against the Carbonari.