In 1667, he participated in the conclave which elected Pope Clement IX[2] and was appointed Cardinal-Priest of Santa Prassede. Less than six months later, he was made Cardinal-Priest of San Lorenzo in Lucina. In 1668, he was appointed Cardinal-Bishop of Sabina but, retained the administration of Ascoli Piceno until later that year.
Later life
Gabrielli served in a number of Church administrative roles during the period best described as his semi-retirement, including administrator of the Diocese of Rieti and Governor General of Fermo. He also participated in the conclaves of 1669-1670, which elected Pope Clement X, and 1676, which elected Pope Innocent XI.[2]
^Pope Alexander the Seventh and the College of Cardinals by John Bargrave, edited by James Craigie Robertson (London: Camden Society 1867; reprint; 2009) (Bargrave died in 1680)