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Dear catholic.com visitors: This Catholic Answers website, with all its free resources, is the world’s largest source of explanations for Catholic beliefs and practices. We receive no funding from the institutional Church and rely entirely on your generosity to sustain this website with trustworthy, accessible content. If every visitor this month donated $1, catholic.com would be fully funded for an entire year. If you’ve never made a gift, now is the time. Your donation will be matched dollar for dollar this week only. Thanks and God bless.

Atto

Faithful follower of Gregory VII in his conflict with the simoniac clergy

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Atto, a faithful follower of Gregory VII in his conflict with the simoniac clergy, b. probably at Milan, made Cardinal of San Marco, assisted (1079) at the retractation of Berengarius in the Roman synod of that year, and signed the decrees of the synod of 1081. He may have been Bishop of Prwneste. Cardinal Mai published under his name (SS. Vet. nova coll., VI, 2, 60 sqq.), from a Vatican manuscript, a “Breviarium Canonum”, or miscellaneous collection of moral and canonical decrees, genuine and forged, from Pope Clement I to Gregory the Great. It deals particularly with clerical rights and duties, ecclesiastical acts, the administration of the sacraments, censures, jurisdiction, etc. Other cardinals of the name are mentioned in the anonymous (eighteenth-century) “Diatriba de Attonibus” published by Cardinal Mai (op. cit.; cf. P.L., CXXXIV, 902).


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