Hyacinthe Sigismond Gerdil

Hyacinthe Sigismond Gerdil, B ( born June 23, 1718, Samoens, France; † August 12, 1802 in Rome) was Cardinal of the Roman Catholic Church.

As Clerks Regular of the Congregation of St. Paul on June 11, 1741 ordained a priest, Pope Pius VI appointed him. on February 17, 1777 titular bishop of Dibon. After the Cardinal Marcantonio Colonna he had donated the episcopal consecration on March 2, 1777, the Pope appointed him on 23 June 1777 pectore cardinal and published his name as such on December 11 in 1780. Initially, Cardinal Priest of San Giovanni a Porta Latina, he moved on 20 September 1784 the titular church of Santa Cecilia. From 1786 to 1787 Camerlengo of the Sacred College, was Gerdil since February 27, 1795 Prefect of the Congregation of Propaganda, which he in 1801 even as prefect took over the leadership of the Congregation of the Index.

Hyacinthe Sigismond Gerdil acted as tutor to the King Charles Emmanuel IV and Victor Emmanuel I of Piedmont - Sardinia.