Pietro de Bono dating history

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Pietro de Bono (Petrus de Bono, C.R.) (died 20 November 1187) was a cardinal of the Roman Catholic Church. He was a native of Verona in Lombardy, signing his name at least once as D. Petri de Verona. He was not from Pisa, nor was he from Bologna. He belonged to the Canons Regular of S. Maria di Reno in Bologna. An early seventeenth-century family history, however, identifies him as a member of the House of Rusca of Como, son of Giovanni Rusca, citing a notarial deed of 1147 and calling him "Pietro Rusca detto il Buono." This claim has not been assessed by modern scholarship and should be treated with appropriate caution, given the genealogical and celebratory character of the source; it nonetheless predates, and is independent of, the Verona attribution, which itself rests on a single later signature.