Lords of Piombino
1399-1594
House of Appiani
1399-1501
1501-1548
1557-1594
Lords of Piombino
- Gherardo Appiani (1374-1405) first Lord of Piombino in 1399. Married Paola Colonna (1380-1445), daughter of Agapito Colonna, Lord of Genazzano.
- Jacopo II Appiani (1400-1441) Lord of Piombino
- Paola Colonna (1380-1445) Regent of Piombino, wife of Gherardo Appiani and sister to Pope Martin V.
- Caterina (1401-1451) Lady of Piombino. Married Rinaldo Orsini (d. 1450).
- Emanuele Appiani (1380-1457) Lord of Piombino.
- Jacopo III Appiani (1422-1474) Lord of Piombino
- Jacopo IV Appiani (1459-1510) Lord of Piombino until 1501 and again after 1503.
- Iacopo V Appiani (1480-1545) Lord of Piombino.
- Iacopo VI Appiani (1539-1585) Lord of Piombino until 1548 and again after 1557.
- Alessandro Appiani (1558-1589) Lord of Piombino.
- Jacopo VII Appiani (1581-1603) Lord of Piombino, created Prince of Piombino in 1594. See below.
Princes of Piombino
1594-1801
1814-1815
House of Appiani
1594-1628
Jacopo VII Appiani (1581-1603) Prince of Piombino
- Jacopo VII Appiani (1581-1603) Lord of Piombino, created Prince of Piombino and Marquess of Populonia in 1594.
- Carlo Appiani (1560-1620) Prince of Piombino until 1603.
- Isabella Appiani (1577-1661) Princess of Piombino from 1611 until 1628.
House of Ludovisi
1634-1733
Niccolò I Ludovisi (1610-1664) Prince of Piombino
- Niccolò I Ludovisi (1610-1664) Prince of Piombino from 1634, son of Orazio Ludovisi, Patrician of Bologna, Duke of Fiano and Zagarolo and nephew to Pope Gregory XV. Knight of the Order of the Golden Fleece. Married firstly Isabella Gesualdo, Princess of Venosa, secondly Polissena Appiani, daughter and heiress of Isabella Appiani, Princess of Piombino and thirdly Costanza Pamphili, niece of Pope Innocent X.
- Giovan Battista Ludovisi (1647- 1699) Prince of Piombino, son of Niccolò I by his third wife, Costanza Pamphili.
- Niccolò II Ludovisi (1699–1700) Prince of Piombino.
- Olimpia Ludovisi (1646–1700) Princess of Piombino, a nun.
Ippolita I Ludovisi (1663–1733) Princess of Piombino
- Ippolita I Ludovisi (1663–1733) Princess of Piombino. Married Gregorio II Boncompagni (1642- 1707) 5th Duke of Sora and Arce, Co-Regent from 1701 to 1707.
House of Boncompagni-Ludovisi
1733-1815
Maria Eleonora I Boncompagni (1686–1745) Princess of Piombino
- Maria Eleonora I Boncompagni (1686–1745) Princess of Piombino. Married her uncle Antonio I Boncompagni (1658–1721) 6th Duke of Sora and Arce. Knight of the Order of the Golden Fleece.
Gaetano I Boncompagni Ludovisi (1706 –1777) Prince of Piombino
- Gaetano I Boncompagni Ludovisi (1706 –1777) Prince of Piombino, 7th 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, 7th 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, 8th Duke of Sora and Arce. Married Maddalena (1782-1846) daughter of Baldassarre Odescalchi, 3rd Prince Odescalchi.
Clerics:
House of Boncompagni
Pope Gregory XIII (1502-1585)
- Pope Gregory XIII (1502-1585) born Ugo Boncompagni.
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.
House of Ludovisi
Pope Gregory XV (1554-1623)
- Pope Gregory XV (1554-1623) born Alessandro Ludovisi
Cardinal Ludovico Ludovisi (1595-1632)
- Cardinal Ludovico Ludovisi (1595-1632) Archbishop of Bologna, son of Orazio Ludovisi, Patrician of Bologna, Duke of Fiano and Zagarolo.