Julius III. (Giovanni Maria del Monte), February 1550 to March 1555.
Marcellus II. (Marcello Cervini), April 1555.
Paul IV. (John Peter Caraffa), May 1555 to April 1559.
Pius IV. (Giovanni Angelo dei Medici), December 1559 to December 1565.
Pius V. (Michael Ghislieri), January 1566 to May 1572.
Gregory XIII. (Hugh Buoncompagno), May 1572 to April 1585.
Sixtus V. (Felix Peretti), April 1585 to August 1590.
Urban VII. (Giovanni Baptist Castogna), September 1590.
Gregory XIV. (Nicholas Sfondrati), December 1590 to October 1591.
Innocent IX. (Giovanni Antony Facchinetti), October to December 1591.