The Letter which Pope Gregory XV wrote to Charles I of England concerning his marriage to the Infanta of Spain, and that Prince's Answer, which drew forth some Observations (4to, Ipswich, 1729) from William Matthews.
The sculpture found its way into the collection formed by Cardinal Ludovico Ludovisi (1595–1632) the nephew of Pope Gregory XV at the splendid villa and gardens he built near Porta Pinciana, on the site where Julius Caesar and his heir, Octavian (Caesar Augustus), had had their villa.
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.
Through her mother she was the grand-niece of Pope Innocent X and through her father she was the grand-niece of Pope Gregory XV.
In 1623, after the Thirty Years' War, it was sent with the rest of the Palatine Library to Rome as a present from Maximilian I of Bavaria to Pope Gregory XV and it was kept in the Vatican Library.
He was influential in bringing the Bolognese artist Guercino to Rome, a landmark in the development of the High
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Pope Gregory XV placed the religious under the Rule of St. Augustine, the vow of poverty being added to those of chastity and obedience and monastic observance and the recitation of the Office of the Blessed Virgin imposed.
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).