Medieval Latin Christian Texts on the Jewish Calendar

A Study with Five Editions and Translations

During the later Middle Ages (twelfth to fifteenth centuries), the study of chronology, astronomy, and scriptural exegesis among Christian scholars gave rise to Latin treatises that dealt specifically with the Jewish calendar and its adaptation to Christian purposes. In Medieval Latin Christian Texts on the Jewish Calendar C. Philipp E. Nothaft offers the first assessment of this phenomenon in the form of critical editions, English translations, and in-depth studies of five key texts, which together shed fascinating new light on the avenues of intellectual exchange between medieval Jews and Christians.

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C. Philipp E. Nothaft is a research fellow at The Warburg Institute, London. He has published widely on the history of time, astronomy, and calendars from late antiquity to the early modern period, including the monograph Dating the Passion (Brill, 2012).
Table of Contents
PREFACE
LIST OF PLATES
ABBREVIATIONS
SIGNS USED IN THE CRITICAL APPARATUS
INTRODUCTION
CHAPTER ONE: CONTEXTS AND PRETEXTS
1. The Jewish calendar: history and structure
2. The Easter computus and the challenge of calendar reform
3. The Christian encounter with the Jewish calendar: antiquity to twelfth century
CHAPTER TWO: THE ANONYMOUS LIBER ERARUM
1. Structure and contents
2. Origin and date
3. The manuscripts
4. The edition
LIBER ERARUM
THE BOOK OF ERAS
CHAPTER THREE: ROBERT OF LEICESTER’S TREATISE ON THE HEBREW CALENDAR (1294)
1. Franciscan Hebraism and the challenge of biblical chronology
2. Manuscripts, date, and authorship
3. Structure and contents
4. The edition
ROBERTUS DE LEYCESTRIA: TRACTATUS DE COMPOTO HEBREORUM APTATO AD KALENDARIUM
ROBERT OF LEICESTER: TREATISE ON THE COMPUTUS OF THE HEBREWS AND ITS ADAPTATION TO OUR CALENDAR
CHAPTER FOUR: NICHOLAS TREVET’S COMPOTUS HEBREORUM (1310)
1. Introduction
2. Context, contents, and sources
3. The edition
NICOLAUS TREVET: COMPOTUS HEBREORUM
NICHOLAS TREVET: ON THE COMPUTUS OF THE HEBREWS
CHAPTER FIVE: THE COMPUTUS IUDAICUS OF 1342
1. Introduction
2. The manuscripts
3. Structure and contents
4. Context and transmission
5. Transliteration of Hebrew terms
6. The tables
7. Major textual changes
8. The commentaries
9. Authorship and date
10. The users
11. The edition
COMPUTUS JUDAICUS
ON THE JEWISH COMPUTUS
COMMENTARIUS IN COMPUTUM JUDAICUM
COMMENTARY ON THE ‘JEWISH COMPUTUS’
CHAPTER SIX: HERMANN ZOEST’S CALENDARIUM HEBRAICUM NOVUM (1436)
1. The Jewish calendar in the work of Hermann Zoest
2. Calendarium Hebraicum novum: structure and contents
3. The manuscripts
4. The edition
HERMANNUS ZOESTIUS: CALENDARIUM HEBRAICUM NOVUM
HERMANN ZOEST: A NEW HEBREW CALENDAR
5. Chronological commentary on Hermann’s Calendarium
APPENDIX I: JOHN OF PULCHRO RIVO ON THE JEWISH CALENDAR
APPENDIX II: NOTES ON FURTHER TEXTS AND MANUSCRIPTS
BIBLIOGRAPHY

Historians of science, medievalists, Hebraists, scholars of medieval Jewish-Christian relations, and all those interested in chronology, computistics, and calendars.