He was the son of Orazio Ludovisi, patrician of Bologna and commander-in-chief of the Papal Army (as well as brother of Pope Gregory XV), and Lavinia Albergati.
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Ippolita (1663–1733), Princess of Piombino (1700–1733), married Gregorio II Boncompagni and had issue
Niccolò Machiavelli | Niccolò Paganini | Niccolò Jommelli | Orazio Ludovisi | Niccolò Ammaniti | Niccolo Jommelli | Niccolò da Tolentino | Ludovisi Gaul | Giovanni Niccolò Servandoni | Niccolò Zucchi | Niccolò Tommaseo | Niccolò Piccinino | Niccolò Ludovisi | Ludovico Ludovisi | Casino di Villa Boncompagni Ludovisi | Niccolo Tommaseo | Niccolo Rondinelli | Niccolò Rinaldi | Niccolò Piccinni | Niccolò Pandolfini | Niccolò Orlandini | Niccolò Machiavelli | Niccolò III d'Este, Marquis of Ferrara | Niccolò III d'Este | Niccolò Fontana Tartaglia | Niccolò di Segna | Niccolò di Pietro Gerini | Niccolò dell'Abbate | Niccolò de' Conti | Niccolò Cassana |
Aldobrandini was born 20 April 1623, the daughter of Giorgio Aldobrandini (Prince of Meldola, Sarsina and Rossano) and Ippolita Ludovisi (daughter of Orazio Ludovisi, sister of Niccolò Ludovisi and a niece of Pope Gregory XV).