Pope Gregory XIII (1502-1585)
- Pope Gregory XIII (1502-1585) born Ugo Boncompagni.
Dukes of Sora
1579-present
Princes of Piombino
1745-present
Giacomo Boncompagni (1548 – 1612) I Duke of Sora
- Giacomo Boncompagni (1548 – 1612) I Duke of Sora, Aquino, Arce and Arpino, and Marquess of Vignola, illegitimate son of Pope Gregory XIII. Married Costanza Sforza di Santa Fiora (1550 – 1617) daughter of Sforza Sforza di Santa Fiora, X Count of Santa Fiora.
- Gregorio I Boncompagni (1590 – 1628) II Duke of Sora and Arce.
- Giacomo II Boncompagni (1613 – 1636) III Duke of Sora and Arce.
- Ugo I Boncompagni (1614 – 1676) IV Duke of Sora and Arce
Gregorio II Boncompagni (1642- 1707) V Duke of Sora and Arce
- Gregorio II Boncompagni (1642- 1707) V Duke of Sora and Arce, Co-Regent of Piombino from 1701 to 1707. Married Ippolita I Ludovisi (1663–1733) Princess of Piombino. See Piombino
Antonio I Boncompagni (1658–1731) VI Duke of Sora and Arce
- Antonio I Boncompagni (1658–1731) VI Duke of Sora and Arce. Knight of the Order of the Golden Fleece. Married his niece Maria Eleonora I Boncompagni (1686–1745) Princess of Piombino.
Gaetano I Boncompagni Ludovisi (1706 –1777) Prince of Piombino
- Gaetano I Boncompagni Ludovisi (1706 –1777) Prince of Piombino, VII Duke of Sora and Arce. Knight of the Order of the Golden Fleece. Knight of the Order of Saint Januarius. Married Laura Chigi Albani della Rovere (1707-1792) daughter of Augusto Chigi Albani della Rovere, Prince Farnese.
Antonio II Boncompagni Ludovisi (1735–1805) Prince of Piombino
- Antonio II Boncompagni Ludovisi (1735–1805) Prince of Piombino until 1801, VIII Duke of Sora and Arce. Married firstly Giacinta Orsini (1741-1759) daughter of Domenico Orsini, Duke of Gravina and secondly Vittoria Sforza Cesarini (d.1778) daughter of Giuseppe Sforza Cesarini, Prince of Genzano.
Luigi I Boncompagni Ludovisi (1767-1841) Prince of Piombino
- Luigi I Boncompagni Ludovisi (1767-1841) Prince of Piombino, reigning 1814 to 1815, IX Duke of Sora and Arce. Married Maddalena (1782-1846) daughter of Baldassarre Odescalchi, 3rd Prince Odescalchi.
- Antonio III Boncompagni Ludovisi (1808-1883) Prince of Piombino, X Duke of Sora and Arce.
- Rodolfo Boncompagni Ludovisi (1832-1911) Prince of Piombino, XI Duke of Sora and Arce.
- Ugo II Boncompagni Ludovisi (1856-1935) Prince of Piombino, XII Duke of Sora and Arce.
- Francesco Boncompagni Ludovisi (1886 - 1955) Prince of Piombino, XIII Duke of Sora and Arce.
- Nicolò Francesco Boncompagni Ludovisi (1941 — 1964) Prince of Piombino, XIV Duke of Sora and Arce.
- Francesco Maria Boncompagni Ludovisi (b. 1965) Prince of Piombino, XV Duke of Sora and Arce.
Dukes of Fiano
1731-present
Pietro Gregorio Ottoboni Boncompagni Ludovisi (1709 – 1747) ex uxor II Duke of Fiano
- Pietro Gregorio Ottoboni Boncompagni Ludovisi (1709 – 1747) ex uxor II Duke of Fiano, second son of Antonio I Boncompagni, VI Duke of Sora and Arce and Maria Eleonora I Boncompagni, Princess of Piombino. Married Maria Francesca (1715-1758) daughter of Marco Ottoboni, I Duke of Fiano. See Ottoboni
- Alessandro Boncompagni Ludovisi Ottoboni (1734-1780) III Duke of Fiano.
- Marco Boncompagni Ludovisi Ottoboni (1777-1833) IV Duke of Fiano.
- Alessandro Boncompagni Ludovisi Ottoboni (1805-1837) V Duke of Fiano.
- Marco Boncompagni Ludovisi Ottoboni (1832-1909) VI Duke of Fiano.
- Augusto Ruspoli Ottoboni (1880-1912) ex matre VII Duke of Fiano.
- Cesare Rasponi Ottoboni (d. 1957) ex matre VIII Duke of Fiano.
- Francesco Serlupi Crescenzi Ottoboni, IX Duke of Fiano. Descended from Giovanna, daughter of Alessandro Boncompagni Ludovisi Ottoboni, V Duke of Fiano.
- Girolamo Serlupi Crescenzi Ottoboni, X Duke of Fiano.
- Luigi Serlupi Crescenzi Ottoboni, XI Duke of Fiano.
- Giuseppe Serlupi Crescenzi Ottoboni, XII Duke of Fiano.
- Domenico Serlupi Crescenzi Ottoboni (b. 1939) XIII Duke of Fiano.
Clerics:
Cardinal Francesco III Boncompagni (1592–1641)
- Cardinal Francesco III Boncompagni (1592–1641) Archbishop of Naples.
Cardinal Filippo Boncompagni (1548-1586)
- Cardinal Filippo Boncompagni (1548-1586)
Cardinal Giacomo Boncompagni (1652-1731)
- Cardinal Giacomo Boncompagni (1652-1731) Knight of Malta, Archbishop of Bologna.
Cardinal Girolamo Boncompagni (1622-1684)
- Cardinal Girolamo Boncompagni (1622-1684) Archbishop of Bologna.
Cardinal Ignazio Boncompagni Ludovisi (1743-1799)
- Cardinal Ignazio Boncompagni Ludovisi (1743-1799) son of Gaetano I Boncompagni Ludovisi, Prince of Piombino.