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What role did Cardinal Pietro Gasparri play in creating the 1917 Code of Canon Law?

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First Council of Nicaea — canon law Council of Nicaea in 325, depicted in a Byzantine fresco in the basilica of St. Nicholas in Demre, Turkey.

Cardinal Pietro Gasparri played a pivotal role in the creation of the 1917 Code of Canon Law (Codex Juris Canonici). In 1904, Pope St. Pius X appointed him to direct the massive undertaking of codifying ecclesiastical law, which had previously been scattered across various unmanageable and uncertain collections.12

As the director of this project, Gasparri oversaw the systematic arrangement of the law into a complete and exclusive codification for the Latin church. The commission, working under a papal seal of secrecy, organized the material into five books—covering universal norms, personal law, the law of things, penal law, and procedural law—following a structure inspired by the Roman lawyer Gaius.12

The resulting code, which was promulgated in 1917 and became effective in 1918, replaced older, conflicting laws and established a new foundation for canon law as a unified, dogmatic science.12