Pope Clement IX (1600 – 1669)
- Pope Clement IX (1600 – 1669), born Giulio Rospigliosi
Prince Rospigliosi in the Holy Roman Empire
Papal Prince Rospigliosi
Duke of Zagarolo
1668-present
Earls of Newburgh in the peerage of Scotland
1977--present
Giovanni Battista Rospigliosi (1646 - 1722) I Prince Rospigliosi
- Giovanni Battista Rospigliosi (1646 - 1722) I Prince Rospigliosi, I Duke of Zagarolo, nephew of Pope Clement IX. Married Maria Camilla Pallavicini (1645 – 1710) daughter of Stefano Pallavicini.

Clemente DomenicoRospigliosi (1674 - 1752) II Prince Rospigliosi
- Clemente DomenicoRospigliosi (1674 - 1752) II Prince Rospigliosi, II Duke of Zagarolo. Married Giustina Borromeo Arese (1691 - 1754) daughter of Carlo Borromeo Arese, XI Count of Arona.
- Camillo Rospigliosi (1714 - 1763) III Prince Rospigliosi, III Duke of Zagarolo.

Giovanni Battista Rospigliosi (1726 - 1784) IV Prince Rospigliosi
- Giovanni Battista Rospigliosi (1726 - 1784) IV Prince Rospigliosi, IV Duke of Zagarolo. Married Eleonora Maria Caffarelli, daughter of Baldassarre Caffarelli, VI Duke of Assergi.

Giuseppe Rospigliosi (1755 - 1833) V Prince Rospigliosi
- Giuseppe Rospigliosi (1755 - 1833) V Prince Rospigliosi, V Duke of Zagarolo. Knight of the Order of Saint Joseph. Knight of the Order of the Golden Fleece. Knight of the Order of Saint Januarius. Married Maria Ottavia Odescalchi (1757 - 1829) daughter of Livio Odescalchi, II Prince Odescalchi.

Giulio Cesare Rospigliosi (1781 - 1859) VI Prince Rospigliosi
- Giulio Cesare Rospigliosi (1781 - 1859) VI Prince Rospigliosi, VI Duke of Zagarolo. Knight of the Order of St. Gregory the Great. Married Margherita Colonna Gioeni di Castiglione (1786 - 1864) Princess of Castiglione, daughter of Filippo III, XII Prince and Duke of Paliano.
- Clemente Rospigliosi (1823 - 1897) VII Prince Rospigliosi, VII Duke of Zagarolo, Prince Castiglione.
- Giuseppe Rospigliosi (1848 - 1913) VIII Prince Rospigliosi, VIII Duke of Zagarolo, Prince Castiglione.
- Girolamo Rospigliosi (1907 - 1959) IX Prince Rospigliosi, IX Duke of Zagarolo, Prince Castiglione.
- Giulio Rospigliosi (1907 - 1986) X Prince Rospigliosi, X Duke of Zagarolo, Prince Castiglione, 11th Earl of Newburgh.
- Filippo Rospigliosi (b. 1942) XI Prince Rospigliosi, XI Duke of Zagarolo, Prince Castiglione, 12th Earl of Newburgh.
Clerics:
Cardinals Rospigliosi
- Cardinal Giacomo Rospigliosi (1628 – 1684) nephew of Pope Clement IX.
- Cardinal Felice Rospigliosi (1639 – 1688) nephew of Pope Clement IX.