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Books about Papareschi:
Il sor Pietro, Cosimo Papareschi e Tuttaditutti by BALDINI Antonio (Roma 1889 - Firenze 1962) (1941)
Wiki information Papareschi:
Pietro was an Italian cardinal created by Pope Innocent II on 17 September 1143. He is often referred to as brother of Innocent II and member of the Roman family of Papareschi but this is not attested in the contemporary sources. He signed the papal...
Pope Innocent II, born Gregorio Papareschi, was Pope from 14 February 1130 to his death in 1143. He was probably one of the clergy in personal attendance on the Antipope Clement III.