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Biography
Pier Paolo Crescenzi (1572 – 19 February 1645) was an Italian Catholic cardinal.
Crescenzi was born in 1572, the son of Virgilio Crescenzi, Baron of Montorio, and Costanza del Drago, of the Marquises of Riofreddo. He was the brother of artist Giovanni Battista Crescenzi. He was educated at the University of Perugia and earned a doctorate in utroque iure (Civil and Canon Law).
Very little is known about Crescenzi's early life, but on 17 August 1611 he was elevated to cardinal and installed as Cardinal-Priest of Ss. Nereo ed Achilleo. In 1612, he was appointed Bishop of Rieti and, in 1621, Bishop of Orvieto. In 1629, he was appointed Cardinal-Bishop of Palestrina, where he served for 12 years until being appointed Cardinal-Bishop of Porto-Santa Rufina in 1641. In 1644, he was made Vice-Dean of the College of Cardinals and helped to preside over the Papal conclave of 1644, but died several months later on 19 February 1645.