Johannes de Deo

Biography

• born in Silves (Algarbien/Portugal).
• studied in Bologna under Zoën Tencararius and taught there (ca.1229).
• 1269: Archdeacon in Lissabon and judge

Activities as Canonist

• Apparatus decretorum 
• Breviarium decretorum
• Liber pastoralis
• Liber dispensationum
• Summa super certis casibus decretalium
• Liber iudicum
• Notabilia cum summis super titulis decretalium et decretorum
• Chronica
• Apparatus metricus super arbore decretorum
• Liber distinctionum 
• Commentum super novellis decretalibus
• Liber poenitentiarius
• Liber quaestionum
• Comment on the four causae not mentioned in Huguccio.
• Casus legum canonizatarum
• Cavillationes
• Commentarius in Johannis arborem actionum
• Liber opinionum
• Summa de sponsalibus
• Lectura in decretales
• Catalogus haereticorum
• Liber primaries devariis juris pontificii materiis
• Summa moralis

Editions and Sources

• JOHANNES DE DEO: Libellus dispensationum, in: DRAGOUN, Michael et.al. (ed.): Ubi est finis huius libri deus scit. Středověká knihovna augustiniánských kanovníků v Roudnici nad Labem, Scriptorum, Praha 2015, pp.476-490.
• Johannis de Deo Summa de penitentia. Complures sermons et exempla varia, 13^th/14^th century.

Introductory Secondary Literature

• HAERING, Stephan: Johannes de Deo, in: KASPER, Walter (ed.): Lexikon für Theologie und Kirche, Vol.5: Hermeneutik-Kirchengemeinschaft, Herder, Freiburg 2009, p.900.