to the "Glossa ordinaria" from the "Novella sive commentarius in decretales epistolas Gregorii IX" by Giovanni d'Andrea (Johannes Andreæ). Printed publication After the invention of printing, the Decretals of Gregory IX were first published at Strasburg from the press of Heinrich Eggesteyn. Among the numerous editions that followed, special mention must be made of that published in 1582 (in dibus populi romani) by order of Gregory XIII. The text of this edition, revised by the Correctores Romani, a pontifical commission established for the revision of the text of the "Corpus Juris", had the force of canon law, even when it differed from that of St. Raymond. It was forbidden to introduce any change into that text (Papal Brief "Cum pro munere", 1 July 1580). Among the other editions, mention may be made of that by Le Conte (Antwerp, 1570), of prior date to the Roman edition and containing the partes decis; that of the brothers Pithou (Paris, 1687); that of Böhmer (Halle, 1747), which did not reproduce the text of the Roman edition and was in its textual criticism more audacious than happy; the edition of Richter; and that of Friedberg (Leipzig, 1879-1881). All these authors added critical notes and the partes decis. Commentators To indicate the principal commentators on the Decretals would mean writing a history of canon law in the Middle Ages. Important canonists include Innocent IV (died 1254), Enrico de Segusio or Hostiensis (died 1271), the "Abbas antiquus" (thirteenth century), Johannes Andreæ, Baldus de Ubaldis (died 1400), Petrus de Ancharano (died 1416), Franciscus de Zabarellis (died 1417), Dominicus a Sancto Geminiano (fifteenth century), Joannes de Imola (died 1436) and Nicolò Tudesco also called the "Abbas Siculus", or "Modernus", or "Panormitanus" (died 1453). Among the modern commentators, Manuel Gonzalez Tellez and Fagnanus may be consulted advantageously for the interpretation of the text of the Decretals. The Decretals of Gregory IX remain the basis of canon law so far as it has not been modified by subsequent collections and by the general laws of the Church (see Corpus Juris Canonici). References External links From the Rare Book and Special Collections Division at the Library of Congress: Decretales Gregorii, Volume One Decretales Gregorii, Volume Two Decretales Gregorii, Volume Three Canon law codifications 1234 works Raymond of Penyafort