Ippolita Ludovisi
Olimpia Ippolita I Ludovisi (December 24, 1663 – December 29, 1733) was the Princess of Piombino from 1701 until her death. She was born in Cagliari, the youngest daughter of Niccolò I Ludovisi.
On November 27, 1700 she inherited the family fiefs from her sister Olimpia, including Piombino. On 19 October 1681 she married Gregorio II Boncompagni, 5th duke of Sora and Arce, they had the following children:
- Hugo (1684–1686) died young
- Maria Eleonora (1686–1745), Princess of Piombino, married Antonio 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
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.