San Cesareo
On 10 April 1747 he was made cardinal deacon and was given the deaconry of San Cesareo in Palatio on 15 May. He went on to receive the subdiaconate (November 1747) and the diaconate (31 March 1748). He acted as Cardinal Protector of the Kingdom of Poland in the Roman Curia. In 1758 he participated in the Papal conclave.