Pope Gregory XV, born Alessandro Ludovisi, was the head of the Catholic Church and ruler of the Papal States from 9 February 1621 until his death in 1623. He is notable for founding the Congregation f
Portrait by Guercino, 1622 (oil on canvas, Getty Center, Los Angeles)
Bust of Pope Gregory XV, 1621 by Gian Lorenzo Bernini
Pope Gregory XV with his cardinal-nephew of unprecedented income and authority, Ludovico Ludovisi, known as il cardinale padrone
Monument to Pope Gregory XV and Cardinal Ludovico Ludovisi in Sant'Ignazio, by Pierre Le Gros the Younger (c. 1709–1714)
Niccolò I Ludovisi, 2nd Duke of Fiano and Zagarolo, was Prince of Piombino, Marquis of Populonia, Prince of Venosa and Count of Conza, Lord di Scarlino, Populonia, Vignale, Abbadia del Fango, Suvereto
Niccolò I Ludovisi, Prince of Piombino - Lord of Gesualdo