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Bio-Bibliographical Guide to Medieval and Early Modern Jurists

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Report No. a173


mid-12th c.


Alternative Names



May have been the full name of an otherwise unknown magister, who wrote and signed some of the early glosses on Gratian’s Decretum. Rudolf Weigand has counted seven of them in two manuscripts. His glosses are signed ‘Cy’.



No. 1

Glosses on the Decretum.


Text(s) – Manuscripts

No. 1

Glosses on the Decretum.


Arras, BM 500


München, BSB Clm 28175



R. Weigand, ‘The Development of the Glossa ordinaria to Gratian’s Decretum’, in The History of Medieval Canon Law in the Classical Period, 1140–1234: From Gratian to the Decretals of Pope Gregory IX, W. Hartmann and K. Pennington, ed. (History of Medieval Canon Law 6; Washington DC 2008) 78, 96.

R. Weigand, Die Glossen zum Dekret Gratians: Studien zu den frühen Glossen und Glossenkompositionen (SG 25/26; Roma 1991) 3.2.

R. Weigand, Die Naturrechtslehre der Legisten und Dekretisten von Irnerius bis Accursius und von Gratian bis Johannes Teutonicus (Münchener Theologische Studien 3, Kan. Abt. 26; München 1967) 48–49, 51, 82–83, 448, 450.