Ippolita Ludovisi

Olimpia Ippolita I Ludovisi (24 December 1663 – 29 December 1733) was the Princess of Piombino from 1701 until her death in 1733.

She was born in Cagliari, the youngest daughter of Niccolò I Ludovisi, prince of Piombino, and Constanza Pamphilj, princess of San Martino and Alviano, sister of prince Camillo Pamphilj. On 19 October 1681 she married Gregorio II Boncompagni, 5th duke of Sora and Arce.

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.

• Hugo (1684–1686) died young
• Maria Eleonora (1686–1745), Princess of Piombino, married Antonio I Boncompagni
• Constance (1687–1768), married Vincenzo Giustiniani, Prince of Bassano
• Maria Teresa (1692–1744), married Urbano Barberini, Prince of Palestrina
• Giulia (1695–1751), married Marco Ottoboni, Duke of Fiano
• Anna Maria (1696–1752), married Gian Vincenzo Salviati, Duke of Giuliano

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