6 suburbicarian seesOstia and Velletri, Porto and Sta Rufina, Albano, Frascati, Palestrina, Sabinaall held by cardinal bishops.
He then closed the Collegio Romano, on the plea of its insolvency, seized the houses at Frascati and Tivoli, and broke up the establishments in Bologna and the Legations.
In 1759 he was consecrated archbishop of Corinth in partibus, and in 1761 bishop of Frascati (the ancient Tusculum) in the Alban Hills near Rome.
Ep. Tusc:" (Henry the Ninth of Great Britain, France and Ireland, King, Defender of the Faith, Cardinal, Bishop of Frascati).
In February 1798, at the approach of the invading French forces, Henry was forced to fly from Frascati to Naples, whence at the close of the same year he sailed to Messina.