Ippolita Ludovisi

Ippolita I Ludovisi (24 December 1663 – 29 December 1733) was the Princess of Piombino, Marchioness of Populonia, Princess of Venosa and Countess of Conza, Lady di Scarlino, Populonia, Vignale, Abbadia del Fango, Suvereto, Buriano, Cerboli e Palmaiolan, and Lady princess of the Tuscan Archipelago including the islands of Elba, Montecristo, Pianosa, Gorgona, Capraia, and Isola del Giglio from 1701 until her death in 1733.

She was born in Cagliari, the youngest daughter of Niccolò I Ludovisi, prince of Piombino, and Constanza Pamphili, princess of San Martino and Alviano, sister of prince Camillo Pamphili. On 19 October 1681 she married Don Gregorio II Boncompagni (7 July 1642 – 1 January 1707), 5th Duke of Sora, Aquino, Arce and Arpino and 6th Marquess of Vignola and Prince Consort of Piombino, etc, great-great-grandson of Pope Gregory XIII.

On 27 November 1700, she inherited the family fiefs from her sister Olimpia, including Piombino.

Ippolita was outlived by her five daughters. The Principality of Piombino was then inherited by the members of the Boncompagni family, through her eldest daughter Maria Eleonora.

• Don Ugo Boncompagni-Ludovisi (6 March 1684 – 1686)
• Donna Maria Eleonora I Boncompagni-Ludovisi (10 April 1686 - 5 January 1745), Princess of Piombino, etc, married on 29 March 1702 her paternal uncle, Gregorio's brother Don Antonio I Boncompagni-Ludovisi (10 April 1658 - 28 January 1731), 6th Duke of Sora, Aquino, Arce and Arpino, 7th Marquess of Vignola, Prince Consort of Piombino, etc, and had issue
• Donna Costanza Boncompagni-Ludovisi (6 September 1687 – 6 February 1768), married in 1705 Vincenzo Giustiniani, Prince of Bassano
• Donna Maria Teresa Boncompagni-Ludovisi (27 February 1692 – 7 June 1744), married in 1714 Urbano Barberini, Prince of Palestrina
• Donna Giulia Boncompagni-Ludovisi (22 January 1695 – 3 November 1751), married in 1714 Marco Ottoboni, Duke of Fiano
• Donna Anna Maria Boncompagni-Ludovisi (21 January 1696 – 11 January 1752), married Gian Vincenzo Salviati, Duke of Giuliano
• Donna Lavinia Boncompagni-Ludovisi (22 December 1697 - 20 April 1773), married in 1723 Don Marino Caracciolo (22 February 1696 - 1 July 1747), Prince of San Buono

• Mauro Carrara, Signori e principi di Piombino, Bandecchi & Vivaldi, Pontedera 1996.